diff --git a/core/java/android/app/ActivityManager.java b/core/java/android/app/ActivityManager.java
index 084c71f..a8d183a 100644
--- a/core/java/android/app/ActivityManager.java
+++ b/core/java/android/app/ActivityManager.java
@@ -5954,6 +5954,20 @@
     }
 
     /**
+     * Used by {@link com.android.systemui.theme.ThemeOverlayController} to notify of color
+     * palette readiness.
+     * @hide
+     */
+    @RequiresPermission(Manifest.permission.SET_THEME_OVERLAY_CONTROLLER_READY)
+    public void setThemeOverlayReady(boolean readiness) {
+        try {
+            getService().setThemeOverlayReady(readiness);
+        } catch (RemoteException e) {
+            throw e.rethrowFromSystemServer();
+        }
+    }
+
+    /**
      * Resets the state of the {@link com.android.server.am.AppErrors} instance.
      * This is intended for use with CTS only.
      * @hide
diff --git a/core/java/android/app/ActivityManagerInternal.java b/core/java/android/app/ActivityManagerInternal.java
index 232fc92..0ae2e01 100644
--- a/core/java/android/app/ActivityManagerInternal.java
+++ b/core/java/android/app/ActivityManagerInternal.java
@@ -1258,4 +1258,11 @@
      */
     public abstract boolean clearApplicationUserData(String packageName, boolean keepState,
             boolean isRestore, IPackageDataObserver observer, int userId);
+
+    /**
+     * Returns current state of {@link com.android.systemui.theme.ThemeOverlayController} color
+     * palette readiness.
+     * @hide
+     */
+    public abstract boolean getThemeOverlayReadiness();
 }
diff --git a/core/java/android/app/IActivityManager.aidl b/core/java/android/app/IActivityManager.aidl
index b063d04..ceeaf5d 100644
--- a/core/java/android/app/IActivityManager.aidl
+++ b/core/java/android/app/IActivityManager.aidl
@@ -17,7 +17,6 @@
 package android.app;
 
 import android.app.ActivityManager;
-import android.app.ActivityManager.PendingIntentInfo;
 import android.app.ActivityTaskManager;
 import android.app.ApplicationStartInfo;
 import android.app.ApplicationErrorReport;
@@ -553,6 +552,14 @@
     @UnsupportedAppUsage(maxTargetSdk = 30, trackingBug = 170729553)
     boolean isTopOfTask(in IBinder token);
     void bootAnimationComplete();
+
+    /**
+     * Used by {@link com.android.systemui.theme.ThemeOverlayController} to notify of color
+     * palette readiness.
+     * @throws RemoteException
+     */
+    void setThemeOverlayReady(boolean readiness);
+
     @UnsupportedAppUsage
     void registerTaskStackListener(in ITaskStackListener listener);
     void unregisterTaskStackListener(in ITaskStackListener listener);
diff --git a/core/res/AndroidManifest.xml b/core/res/AndroidManifest.xml
index 5c764e2..374c312 100644
--- a/core/res/AndroidManifest.xml
+++ b/core/res/AndroidManifest.xml
@@ -7562,6 +7562,11 @@
     <permission android:name="android.permission.RESET_APP_ERRORS"
         android:protectionLevel="signature" />
 
+    <!-- @hide Allows ThemeOverlayController to delay launch of Home / SetupWizard on boot, ensuring
+         Theme Palettes and Colors are ready  -->
+    <permission android:name="android.permission.SET_THEME_OVERLAY_CONTROLLER_READY"
+        android:protectionLevel="signature|setup" />
+
     <!-- @hide Allows an application to create/destroy input consumer. -->
     <permission android:name="android.permission.INPUT_CONSUMER"
                 android:protectionLevel="signature" />
diff --git a/packages/SettingsLib/SettingsTheme/res/values-v31/styles.xml b/packages/SettingsLib/SettingsTheme/res/values-v31/styles.xml
index f44b161..aed985e 100644
--- a/packages/SettingsLib/SettingsTheme/res/values-v31/styles.xml
+++ b/packages/SettingsLib/SettingsTheme/res/values-v31/styles.xml
@@ -14,10 +14,10 @@
   See the License for the specific language governing permissions and
   limitations under the License.
   -->
-<resources>
+<resources xmlns:androidprv="http://schemas.android.com/apk/prv/res/android">
     <style name="TextAppearance.PreferenceTitle.SettingsLib"
            parent="@android:style/TextAppearance.Material.Subhead">
-        <item name="android:textColor">@color/settingslib_text_color_primary</item>
+        <item name="android:textColor">?androidprv:attr/materialColorOnSurface</item>
         <item name="android:fontFamily">@string/settingslib_config_headlineFontFamily</item>
         <item name="android:textSize">20sp</item>
     </style>
diff --git a/packages/SystemUI/AndroidManifest.xml b/packages/SystemUI/AndroidManifest.xml
index f877d7a..12e8f57 100644
--- a/packages/SystemUI/AndroidManifest.xml
+++ b/packages/SystemUI/AndroidManifest.xml
@@ -262,6 +262,9 @@
 
     <uses-permission android:name="android.permission.MODIFY_THEME_OVERLAY" />
 
+    <!-- Activity Manager -->
+    <uses-permission android:name="android.permission.SET_THEME_OVERLAY_CONTROLLER_READY" />
+
     <!-- accessibility -->
     <uses-permission android:name="android.permission.MODIFY_ACCESSIBILITY_DATA" />
     <uses-permission android:name="android.permission.MANAGE_ACCESSIBILITY" />
diff --git a/packages/SystemUI/src/com/android/systemui/theme/ThemeOverlayApplier.java b/packages/SystemUI/src/com/android/systemui/theme/ThemeOverlayApplier.java
index 3376e23..147e158 100644
--- a/packages/SystemUI/src/com/android/systemui/theme/ThemeOverlayApplier.java
+++ b/packages/SystemUI/src/com/android/systemui/theme/ThemeOverlayApplier.java
@@ -15,6 +15,8 @@
  */
 package com.android.systemui.theme;
 
+import static com.android.systemui.shared.Flags.enableHomeDelay;
+
 import android.annotation.AnyThread;
 import android.content.om.FabricatedOverlay;
 import android.content.om.OverlayIdentifier;
@@ -32,6 +34,7 @@
 import com.android.systemui.Dumpable;
 import com.android.systemui.dagger.SysUISingleton;
 import com.android.systemui.dagger.qualifiers.Background;
+import com.android.systemui.dagger.qualifiers.Main;
 import com.android.systemui.dump.DumpManager;
 
 import com.google.android.collect.Lists;
@@ -142,6 +145,7 @@
     private final Map<String, String> mCategoryToTargetPackage = new ArrayMap<>();
     private final OverlayManager mOverlayManager;
     private final Executor mBgExecutor;
+    private final Executor mMainExecutor;
     private final String mLauncherPackage;
     private final String mThemePickerPackage;
 
@@ -150,9 +154,11 @@
             @Background Executor bgExecutor,
             @Named(ThemeModule.LAUNCHER_PACKAGE) String launcherPackage,
             @Named(ThemeModule.THEME_PICKER_PACKAGE) String themePickerPackage,
-            DumpManager dumpManager) {
+            DumpManager dumpManager,
+            @Main Executor mainExecutor) {
         mOverlayManager = overlayManager;
         mBgExecutor = bgExecutor;
+        mMainExecutor = mainExecutor;
         mLauncherPackage = launcherPackage;
         mThemePickerPackage = themePickerPackage;
         mTargetPackageToCategories.put(ANDROID_PACKAGE, Sets.newHashSet(
@@ -184,12 +190,21 @@
     /**
      * Apply the set of overlay packages to the set of {@code UserHandle}s provided. Overlays that
      * affect sysui will also be applied to the system user.
+     *
+     * @param categoryToPackage Overlay packages to be applied
+     * @param pendingCreation Overlays yet to be created
+     * @param currentUser Current User ID
+     * @param managedProfiles Profiles get overlays
+     * @param onComplete Callback for when resources are ready. Runs in the main thread.
      */
     public void applyCurrentUserOverlays(
             Map<String, OverlayIdentifier> categoryToPackage,
             FabricatedOverlay[] pendingCreation,
             int currentUser,
-            Set<UserHandle> managedProfiles) {
+            Set<UserHandle> managedProfiles,
+            Runnable onComplete
+    ) {
+
         mBgExecutor.execute(() -> {
 
             // Disable all overlays that have not been specified in the user setting.
@@ -236,6 +251,10 @@
 
             try {
                 mOverlayManager.commit(transaction.build());
+                if (enableHomeDelay() && onComplete != null) {
+                    Log.d(TAG, "Executing onComplete runnable");
+                    mMainExecutor.execute(onComplete);
+                }
             } catch (SecurityException | IllegalStateException e) {
                 Log.e(TAG, "setEnabled failed", e);
             }
diff --git a/packages/SystemUI/src/com/android/systemui/theme/ThemeOverlayController.java b/packages/SystemUI/src/com/android/systemui/theme/ThemeOverlayController.java
index 2b9ad50..585ab72 100644
--- a/packages/SystemUI/src/com/android/systemui/theme/ThemeOverlayController.java
+++ b/packages/SystemUI/src/com/android/systemui/theme/ThemeOverlayController.java
@@ -20,6 +20,7 @@
 
 import static com.android.systemui.Flags.themeOverlayControllerWakefulnessDeprecation;
 import static com.android.systemui.keyguard.WakefulnessLifecycle.WAKEFULNESS_ASLEEP;
+import static com.android.systemui.shared.Flags.enableHomeDelay;
 import static com.android.systemui.theme.ThemeOverlayApplier.COLOR_SOURCE_HOME;
 import static com.android.systemui.theme.ThemeOverlayApplier.COLOR_SOURCE_LOCK;
 import static com.android.systemui.theme.ThemeOverlayApplier.COLOR_SOURCE_PRESET;
@@ -31,6 +32,7 @@
 import static com.android.systemui.theme.ThemeOverlayApplier.OVERLAY_COLOR_SOURCE;
 import static com.android.systemui.theme.ThemeOverlayApplier.TIMESTAMP_FIELD;
 
+import android.app.ActivityManager;
 import android.app.UiModeManager;
 import android.app.WallpaperColors;
 import android.app.WallpaperManager;
@@ -140,6 +142,7 @@
     // Current wallpaper colors associated to a user.
     private final SparseArray<WallpaperColors> mCurrentColors = new SparseArray<>();
     private final WallpaperManager mWallpaperManager;
+    private final ActivityManager mActivityManager;
     @VisibleForTesting
     protected ColorScheme mColorScheme;
     // If fabricated overlays were already created for the current theme.
@@ -414,7 +417,8 @@
             WakefulnessLifecycle wakefulnessLifecycle,
             JavaAdapter javaAdapter,
             KeyguardTransitionInteractor keyguardTransitionInteractor,
-            UiModeManager uiModeManager) {
+            UiModeManager uiModeManager,
+            ActivityManager activityManager) {
         mContext = context;
         mIsMonetEnabled = featureFlags.isEnabled(Flags.MONET);
         mIsFidelityEnabled = featureFlags.isEnabled(Flags.COLOR_FIDELITY);
@@ -433,6 +437,7 @@
         mJavaAdapter = javaAdapter;
         mKeyguardTransitionInteractor = keyguardTransitionInteractor;
         mUiModeManager = uiModeManager;
+        mActivityManager = activityManager;
         dumpManager.registerDumpable(TAG, this);
     }
 
@@ -806,8 +811,16 @@
             }
         }
 
+        final Runnable onCompleteCallback = !enableHomeDelay()
+                ? () -> {}
+                : () -> {
+                    Log.d(TAG, "ThemeHomeDelay: ThemeOverlayController ready");
+                    mActivityManager.setThemeOverlayReady(true);
+                };
+
         if (colorSchemeIsApplied(managedProfiles)) {
             Log.d(TAG, "Skipping overlay creation. Theme was already: " + mColorScheme);
+            onCompleteCallback.run();
             return;
         }
 
@@ -816,15 +829,19 @@
                     .map(key -> key + " -> " + categoryToPackage.get(key)).collect(
                             Collectors.joining(", ")));
         }
+
+        FabricatedOverlay[] fOverlays = null;
+
         if (mNeedsOverlayCreation) {
             mNeedsOverlayCreation = false;
-            mThemeManager.applyCurrentUserOverlays(categoryToPackage, new FabricatedOverlay[]{
+            fOverlays = new FabricatedOverlay[]{
                     mSecondaryOverlay, mNeutralOverlay, mDynamicOverlay
-            }, currentUser, managedProfiles);
-        } else {
-            mThemeManager.applyCurrentUserOverlays(categoryToPackage, null, currentUser,
-                    managedProfiles);
+            };
         }
+
+        mThemeManager.applyCurrentUserOverlays(categoryToPackage, fOverlays, currentUser,
+                managedProfiles, onCompleteCallback);
+
     }
 
     private Style fetchThemeStyleFromSetting() {
diff --git a/packages/SystemUI/tests/src/com/android/systemui/theme/ThemeOverlayApplierTest.java b/packages/SystemUI/tests/src/com/android/systemui/theme/ThemeOverlayApplierTest.java
index 83439f0..8f4cbaf 100644
--- a/packages/SystemUI/tests/src/com/android/systemui/theme/ThemeOverlayApplierTest.java
+++ b/packages/SystemUI/tests/src/com/android/systemui/theme/ThemeOverlayApplierTest.java
@@ -104,9 +104,9 @@
     @Before
     public void setup() throws Exception {
         MockitoAnnotations.initMocks(this);
-        mManager = new ThemeOverlayApplier(mOverlayManager,
-                MoreExecutors.directExecutor(),
-                LAUNCHER_PACKAGE, THEMEPICKER_PACKAGE, mDumpManager) {
+        mManager = new ThemeOverlayApplier(mOverlayManager, MoreExecutors.directExecutor(),
+                LAUNCHER_PACKAGE, THEMEPICKER_PACKAGE, mDumpManager,
+                MoreExecutors.directExecutor()) {
             @Override
             protected OverlayManagerTransaction.Builder getTransactionBuilder() {
                 return mTransactionBuilder;
@@ -179,7 +179,7 @@
     @Test
     public void allCategoriesSpecified_allEnabledExclusively() {
         mManager.applyCurrentUserOverlays(ALL_CATEGORIES_MAP, null, TEST_USER.getIdentifier(),
-                TEST_USER_HANDLES);
+                TEST_USER_HANDLES, null);
         verify(mOverlayManager).commit(any());
 
         for (OverlayIdentifier overlayPackage : ALL_CATEGORIES_MAP.values()) {
@@ -191,7 +191,7 @@
     @Test
     public void allCategoriesSpecified_sysuiCategoriesAlsoAppliedToSysuiUser() {
         mManager.applyCurrentUserOverlays(ALL_CATEGORIES_MAP, null, TEST_USER.getIdentifier(),
-                TEST_USER_HANDLES);
+                TEST_USER_HANDLES, null);
 
         for (Map.Entry<String, OverlayIdentifier> entry : ALL_CATEGORIES_MAP.entrySet()) {
             if (SYSTEM_USER_CATEGORIES.contains(entry.getKey())) {
@@ -208,7 +208,7 @@
     public void allCategoriesSpecified_enabledForAllUserHandles() {
         Set<UserHandle> userHandles = Sets.newHashSet(TEST_USER_HANDLES);
         mManager.applyCurrentUserOverlays(ALL_CATEGORIES_MAP, null, TEST_USER.getIdentifier(),
-                userHandles);
+                userHandles, null);
 
         for (OverlayIdentifier overlayPackage : ALL_CATEGORIES_MAP.values()) {
             verify(mTransactionBuilder).setEnabled(eq(overlayPackage), eq(true),
@@ -225,7 +225,7 @@
 
         Set<UserHandle> userHandles = Sets.newHashSet(TEST_USER_HANDLES);
         mManager.applyCurrentUserOverlays(ALL_CATEGORIES_MAP, null, TEST_USER.getIdentifier(),
-                userHandles);
+                userHandles, null);
 
         for (OverlayIdentifier overlayPackage : ALL_CATEGORIES_MAP.values()) {
             verify(mTransactionBuilder, never()).setEnabled(eq(overlayPackage), eq(true),
@@ -239,7 +239,7 @@
                 mock(FabricatedOverlay.class)
         };
         mManager.applyCurrentUserOverlays(ALL_CATEGORIES_MAP, pendingCreation,
-                TEST_USER.getIdentifier(), TEST_USER_HANDLES);
+                TEST_USER.getIdentifier(), TEST_USER_HANDLES, null);
 
         for (FabricatedOverlay overlay : pendingCreation) {
             verify(mTransactionBuilder).registerFabricatedOverlay(eq(overlay));
@@ -253,7 +253,7 @@
         categoryToPackage.remove(OVERLAY_CATEGORY_ICON_ANDROID);
 
         mManager.applyCurrentUserOverlays(categoryToPackage, null, TEST_USER.getIdentifier(),
-                TEST_USER_HANDLES);
+                TEST_USER_HANDLES, null);
 
         for (OverlayIdentifier overlayPackage : categoryToPackage.values()) {
             verify(mTransactionBuilder).setEnabled(eq(overlayPackage), eq(true),
@@ -270,7 +270,7 @@
     @Test
     public void zeroCategoriesSpecified_allDisabled() {
         mManager.applyCurrentUserOverlays(Maps.newArrayMap(), null, TEST_USER.getIdentifier(),
-                TEST_USER_HANDLES);
+                TEST_USER_HANDLES, null);
 
         for (String category : THEME_CATEGORIES) {
             verify(mTransactionBuilder).setEnabled(
@@ -285,7 +285,7 @@
         categoryToPackage.put("blah.category", new OverlayIdentifier("com.example.blah.category"));
 
         mManager.applyCurrentUserOverlays(categoryToPackage, null, TEST_USER.getIdentifier(),
-                TEST_USER_HANDLES);
+                TEST_USER_HANDLES, null);
 
         verify(mTransactionBuilder, never()).setEnabled(
                 eq(new OverlayIdentifier("com.example.blah.category")), eq(false),
diff --git a/packages/SystemUI/tests/src/com/android/systemui/theme/ThemeOverlayControllerTest.java b/packages/SystemUI/tests/src/com/android/systemui/theme/ThemeOverlayControllerTest.java
index b58a41c..c02583a 100644
--- a/packages/SystemUI/tests/src/com/android/systemui/theme/ThemeOverlayControllerTest.java
+++ b/packages/SystemUI/tests/src/com/android/systemui/theme/ThemeOverlayControllerTest.java
@@ -37,6 +37,7 @@
 import static org.mockito.Mockito.verifyNoMoreInteractions;
 import static org.mockito.Mockito.when;
 
+import android.app.ActivityManager;
 import android.app.UiModeManager;
 import android.app.WallpaperColors;
 import android.app.WallpaperManager;
@@ -129,6 +130,8 @@
     private WakefulnessLifecycle mWakefulnessLifecycle;
     @Mock
     private UiModeManager mUiModeManager;
+    @Mock
+    private ActivityManager mActivityManager;
     @Captor
     private ArgumentCaptor<BroadcastReceiver> mBroadcastReceiver;
     @Captor
@@ -164,7 +167,7 @@
                 mBroadcastDispatcher, mBgHandler, mMainExecutor, mBgExecutor, mThemeOverlayApplier,
                 mSecureSettings, mWallpaperManager, mUserManager, mDeviceProvisionedController,
                 mUserTracker, mDumpManager, mFeatureFlags, mResources, mWakefulnessLifecycle,
-                mJavaAdapter, mKeyguardTransitionInteractor, mUiModeManager) {
+                mJavaAdapter, mKeyguardTransitionInteractor, mUiModeManager, mActivityManager) {
             @VisibleForTesting
             protected boolean isNightMode() {
                 return false;
@@ -224,7 +227,7 @@
                 ArgumentCaptor.forClass(Map.class);
 
         verify(mThemeOverlayApplier)
-                .applyCurrentUserOverlays(themeOverlays.capture(), any(), anyInt(), any());
+                .applyCurrentUserOverlays(themeOverlays.capture(), any(), anyInt(), any(), any());
 
         // Assert that we received the colors that we were expecting
         assertThat(themeOverlays.getValue().get(OVERLAY_CATEGORY_SYSTEM_PALETTE))
@@ -249,7 +252,7 @@
         mBroadcastReceiver.getValue().onReceive(null, intent);
         mColorsListener.getValue().onColorsChanged(new WallpaperColors(Color.valueOf(Color.BLACK),
                 null, null), WallpaperManager.FLAG_SYSTEM, USER_SYSTEM);
-        verify(mThemeOverlayApplier).applyCurrentUserOverlays(any(), any(), anyInt(), any());
+        verify(mThemeOverlayApplier).applyCurrentUserOverlays(any(), any(), anyInt(), any(), any());
     }
 
     @Test
@@ -263,7 +266,7 @@
                 ArgumentCaptor.forClass(Map.class);
 
         verify(mThemeOverlayApplier)
-                .applyCurrentUserOverlays(themeOverlays.capture(), any(), anyInt(), any());
+                .applyCurrentUserOverlays(themeOverlays.capture(), any(), anyInt(), any(), any());
 
         // Should not change theme after changing wallpapers, if intent doesn't have
         // WallpaperManager.EXTRA_FROM_FOREGROUND_APP set to true.
@@ -272,7 +275,7 @@
         mColorsListener.getValue().onColorsChanged(new WallpaperColors(Color.valueOf(Color.BLACK),
                 null, null), WallpaperManager.FLAG_SYSTEM, USER_SYSTEM);
         verify(mThemeOverlayApplier, never())
-                .applyCurrentUserOverlays(any(), any(), anyInt(), any());
+                .applyCurrentUserOverlays(any(), any(), anyInt(), any(), any());
     }
 
     @Test
@@ -294,7 +297,7 @@
                 ArgumentCaptor.forClass(Map.class);
 
         verify(mThemeOverlayApplier)
-                .applyCurrentUserOverlays(themeOverlays.capture(), any(), anyInt(), any());
+                .applyCurrentUserOverlays(themeOverlays.capture(), any(), anyInt(), any(), any());
 
         // Assert that we received the colors that we were expecting
         assertThat(themeOverlays.getValue().get(OVERLAY_CATEGORY_SYSTEM_PALETTE))
@@ -333,7 +336,7 @@
                 .isFalse();
 
         verify(mThemeOverlayApplier)
-                .applyCurrentUserOverlays(any(), any(), anyInt(), any());
+                .applyCurrentUserOverlays(any(), any(), anyInt(), any(), any());
     }
 
     @Test
@@ -367,8 +370,7 @@
         assertThat(updatedSetting.getValue().contains(
                 "android.theme.customization.color_both\":\"0")).isTrue();
 
-        verify(mThemeOverlayApplier)
-                .applyCurrentUserOverlays(any(), any(), anyInt(), any());
+        verify(mThemeOverlayApplier).applyCurrentUserOverlays(any(), any(), anyInt(), any(), any());
     }
 
     @Test
@@ -423,7 +425,7 @@
         assertThat(updatedSetting.getValue().contains(
                 "android.theme.customization.color_both\":\"1")).isTrue();
         verify(mThemeOverlayApplier)
-                .applyCurrentUserOverlays(any(), any(), anyInt(), any());
+                .applyCurrentUserOverlays(any(), any(), anyInt(), any(), any());
     }
 
     @Test
@@ -492,7 +494,7 @@
                 "android.theme.customization.color_both\":\"1")).isTrue();
 
         verify(mThemeOverlayApplier)
-                .applyCurrentUserOverlays(any(), any(), anyInt(), any());
+                .applyCurrentUserOverlays(any(), any(), anyInt(), any(), any());
     }
 
     @Test
@@ -523,7 +525,7 @@
         assertThat(updatedSetting.getValue().contains("android.theme.customization.color_index"))
                 .isFalse();
         verify(mThemeOverlayApplier)
-                .applyCurrentUserOverlays(any(), any(), anyInt(), any());
+                .applyCurrentUserOverlays(any(), any(), anyInt(), any(), any());
     }
 
     @Test
@@ -554,7 +556,7 @@
         assertThat(updatedSetting.getValue().contains("android.theme.customization.color_index"))
                 .isFalse();
         verify(mThemeOverlayApplier)
-                .applyCurrentUserOverlays(any(), any(), anyInt(), any());
+                .applyCurrentUserOverlays(any(), any(), anyInt(), any(), any());
     }
 
     @Test
@@ -587,7 +589,7 @@
                 anyInt());
 
         verify(mThemeOverlayApplier)
-                .applyCurrentUserOverlays(any(), any(), anyInt(), any());
+                .applyCurrentUserOverlays(any(), any(), anyInt(), any(), any());
     }
 
     @Test
@@ -620,7 +622,7 @@
                 eq(Settings.Secure.THEME_CUSTOMIZATION_OVERLAY_PACKAGES), updatedSetting.capture());
 
         // Apply overlay by existing theme from secure setting
-        verify(mThemeOverlayApplier).applyCurrentUserOverlays(any(), any(), anyInt(), any());
+        verify(mThemeOverlayApplier).applyCurrentUserOverlays(any(), any(), anyInt(), any(), any());
     }
 
     @Test
@@ -653,7 +655,7 @@
 
 
         verify(mThemeOverlayApplier, never())
-                .applyCurrentUserOverlays(any(), any(), anyInt(), any());
+                .applyCurrentUserOverlays(any(), any(), anyInt(), any(), any());
     }
 
     @Test
@@ -675,7 +677,7 @@
         ArgumentCaptor<Map<String, OverlayIdentifier>> themeOverlays =
                 ArgumentCaptor.forClass(Map.class);
         verify(mThemeOverlayApplier)
-                .applyCurrentUserOverlays(themeOverlays.capture(), any(), anyInt(), any());
+                .applyCurrentUserOverlays(themeOverlays.capture(), any(), anyInt(), any(), any());
 
         // Assert that we received secondary user colors
         assertThat(themeOverlays.getValue().get(OVERLAY_CATEGORY_SYSTEM_PALETTE))
@@ -689,7 +691,7 @@
         mBroadcastReceiver.getValue().onReceive(null,
                 new Intent(Intent.ACTION_PROFILE_ADDED)
                         .putExtra(Intent.EXTRA_USER, MANAGED_USER_HANDLE));
-        verify(mThemeOverlayApplier).applyCurrentUserOverlays(any(), any(), anyInt(), any());
+        verify(mThemeOverlayApplier).applyCurrentUserOverlays(any(), any(), anyInt(), any(), any());
     }
 
     @Test
@@ -700,7 +702,7 @@
                 new Intent(Intent.ACTION_PROFILE_ADDED)
                         .putExtra(Intent.EXTRA_USER, MANAGED_USER_HANDLE));
         verify(mThemeOverlayApplier)
-                .applyCurrentUserOverlays(any(), any(), anyInt(), any());
+                .applyCurrentUserOverlays(any(), any(), anyInt(), any(), any());
     }
 
     @Test
@@ -711,7 +713,7 @@
                 new Intent(Intent.ACTION_PROFILE_ADDED)
                         .putExtra(Intent.EXTRA_USER, MANAGED_USER_HANDLE));
         verify(mThemeOverlayApplier, never())
-                .applyCurrentUserOverlays(any(), any(), anyInt(), any());
+                .applyCurrentUserOverlays(any(), any(), anyInt(), any(), any());
     }
 
     @Test
@@ -723,7 +725,7 @@
                 (new Intent(Intent.ACTION_PROFILE_ADDED))
                         .putExtra(Intent.EXTRA_USER, PRIVATE_USER_HANDLE));
         verify(mThemeOverlayApplier, never())
-                .applyCurrentUserOverlays(any(), any(), anyInt(), any());
+                .applyCurrentUserOverlays(any(), any(), anyInt(), any(), any());
     }
 
 
@@ -737,7 +739,7 @@
         mColorsListener.getValue().onColorsChanged(mainColors, WallpaperManager.FLAG_SYSTEM,
                 USER_SYSTEM);
 
-        verify(mThemeOverlayApplier).applyCurrentUserOverlays(any(), any(), anyInt(), any());
+        verify(mThemeOverlayApplier).applyCurrentUserOverlays(any(), any(), anyInt(), any(), any());
 
         // Regression test: null events should not reset the internal state and allow colors to be
         // applied again.
@@ -747,11 +749,11 @@
         mBroadcastReceiver.getValue().onReceive(null, intent);
         mColorsListener.getValue().onColorsChanged(null, WallpaperManager.FLAG_SYSTEM, USER_SYSTEM);
         verify(mThemeOverlayApplier, never()).applyCurrentUserOverlays(any(), any(), anyInt(),
-                any());
+                any(), any());
         mColorsListener.getValue().onColorsChanged(new WallpaperColors(Color.valueOf(Color.GREEN),
                 null, null), WallpaperManager.FLAG_SYSTEM, USER_SYSTEM);
         verify(mThemeOverlayApplier, never()).applyCurrentUserOverlays(any(), any(), anyInt(),
-                any());
+                any(), any());
     }
 
     @Test
@@ -770,7 +772,7 @@
                 mBroadcastDispatcher, mBgHandler, executor, executor, mThemeOverlayApplier,
                 mSecureSettings, mWallpaperManager, mUserManager, mDeviceProvisionedController,
                 mUserTracker, mDumpManager, mFeatureFlags, mResources, mWakefulnessLifecycle,
-                mJavaAdapter, mKeyguardTransitionInteractor, mUiModeManager) {
+                mJavaAdapter, mKeyguardTransitionInteractor, mUiModeManager, mActivityManager) {
             @VisibleForTesting
             protected boolean isNightMode() {
                 return false;
@@ -791,7 +793,7 @@
         verify(mDeviceProvisionedController).addCallback(mDeviceProvisionedListener.capture());
 
         // Colors were applied during controller initialization.
-        verify(mThemeOverlayApplier).applyCurrentUserOverlays(any(), any(), anyInt(), any());
+        verify(mThemeOverlayApplier).applyCurrentUserOverlays(any(), any(), anyInt(), any(), any());
         clearInvocations(mThemeOverlayApplier);
     }
 
@@ -810,7 +812,7 @@
                 mBroadcastDispatcher, mBgHandler, executor, executor, mThemeOverlayApplier,
                 mSecureSettings, mWallpaperManager, mUserManager, mDeviceProvisionedController,
                 mUserTracker, mDumpManager, mFeatureFlags, mResources, mWakefulnessLifecycle,
-                mJavaAdapter, mKeyguardTransitionInteractor, mUiModeManager) {
+                mJavaAdapter, mKeyguardTransitionInteractor, mUiModeManager, mActivityManager) {
             @VisibleForTesting
             protected boolean isNightMode() {
                 return false;
@@ -831,7 +833,7 @@
         verify(mDeviceProvisionedController).addCallback(mDeviceProvisionedListener.capture());
 
         // Colors were applied during controller initialization.
-        verify(mThemeOverlayApplier).applyCurrentUserOverlays(any(), any(), anyInt(), any());
+        verify(mThemeOverlayApplier).applyCurrentUserOverlays(any(), any(), anyInt(), any(), any());
         clearInvocations(mThemeOverlayApplier);
 
         WallpaperColors mainColors = new WallpaperColors(Color.valueOf(Color.RED),
@@ -853,12 +855,12 @@
 
         // Defers event because we already have initial colors.
         verify(mThemeOverlayApplier, never())
-                .applyCurrentUserOverlays(any(), any(), anyInt(), any());
+                .applyCurrentUserOverlays(any(), any(), anyInt(), any(), any());
 
         // Then event happens after setup phase is over.
         when(mDeviceProvisionedController.isCurrentUserSetup()).thenReturn(true);
         mDeviceProvisionedListener.getValue().onUserSetupChanged();
-        verify(mThemeOverlayApplier).applyCurrentUserOverlays(any(), any(), anyInt(), any());
+        verify(mThemeOverlayApplier).applyCurrentUserOverlays(any(), any(), anyInt(), any(), any());
     }
 
     @Test
@@ -881,11 +883,11 @@
         mColorsListener.getValue().onColorsChanged(mainColors, WallpaperManager.FLAG_SYSTEM,
                 USER_SYSTEM);
         verify(mThemeOverlayApplier, never())
-                .applyCurrentUserOverlays(any(), any(), anyInt(), any());
+                .applyCurrentUserOverlays(any(), any(), anyInt(), any(), any());
 
         mWakefulnessLifecycle.dispatchFinishedGoingToSleep();
         verify(mThemeOverlayApplier, never())
-                .applyCurrentUserOverlays(any(), any(), anyInt(), any());
+                .applyCurrentUserOverlays(any(), any(), anyInt(), any(), any());
     }
 
     @Test
@@ -907,10 +909,10 @@
         mColorsListener.getValue().onColorsChanged(mainColors, WallpaperManager.FLAG_SYSTEM,
                 USER_SYSTEM);
         verify(mThemeOverlayApplier, never())
-                .applyCurrentUserOverlays(any(), any(), anyInt(), any());
+                .applyCurrentUserOverlays(any(), any(), anyInt(), any(), any());
 
         mWakefulnessLifecycleObserver.getValue().onFinishedGoingToSleep();
-        verify(mThemeOverlayApplier).applyCurrentUserOverlays(any(), any(), anyInt(), any());
+        verify(mThemeOverlayApplier).applyCurrentUserOverlays(any(), any(), anyInt(), any(), any());
     }
 
     @Test
@@ -930,7 +932,7 @@
                 ArgumentCaptor.forClass(Map.class);
 
         verify(mThemeOverlayApplier)
-                .applyCurrentUserOverlays(themeOverlays.capture(), any(), anyInt(), any());
+                .applyCurrentUserOverlays(themeOverlays.capture(), any(), anyInt(), any(), any());
 
         // Assert that we received the colors that we were expecting
         assertThat(themeOverlays.getValue().get(OVERLAY_CATEGORY_SYSTEM_PALETTE))
@@ -949,19 +951,19 @@
         mColorsListener.getValue().onColorsChanged(startingColors, WallpaperManager.FLAG_SYSTEM,
                 USER_SYSTEM);
         verify(mThemeOverlayApplier)
-                .applyCurrentUserOverlays(any(), any(), anyInt(), any());
+                .applyCurrentUserOverlays(any(), any(), anyInt(), any(), any());
         clearInvocations(mThemeOverlayApplier);
 
         // Set to the same colors.
         mColorsListener.getValue().onColorsChanged(sameColors, WallpaperManager.FLAG_SYSTEM,
                 USER_SYSTEM);
         verify(mThemeOverlayApplier, never())
-                .applyCurrentUserOverlays(any(), any(), anyInt(), any());
+                .applyCurrentUserOverlays(any(), any(), anyInt(), any(), any());
 
         // Verify that no change resulted.
         mWakefulnessLifecycleObserver.getValue().onFinishedGoingToSleep();
         verify(mThemeOverlayApplier, never()).applyCurrentUserOverlays(any(), any(), anyInt(),
-                any());
+                any(), any());
     }
 
     @Test
@@ -975,7 +977,7 @@
                 ArgumentCaptor.forClass(FabricatedOverlay[].class);
 
         verify(mThemeOverlayApplier)
-                .applyCurrentUserOverlays(any(), themeOverlays.capture(), anyInt(), any());
+                .applyCurrentUserOverlays(any(), themeOverlays.capture(), anyInt(), any(), any());
 
         FabricatedOverlay[] overlays = themeOverlays.getValue();
         FabricatedOverlay accents = overlays[0];
diff --git a/services/core/java/com/android/server/am/ActivityManagerService.java b/services/core/java/com/android/server/am/ActivityManagerService.java
index a5531ae..2750344 100644
--- a/services/core/java/com/android/server/am/ActivityManagerService.java
+++ b/services/core/java/com/android/server/am/ActivityManagerService.java
@@ -187,6 +187,7 @@
 import static com.android.server.wm.ActivityTaskManagerService.DUMP_VISIBLE_ACTIVITIES;
 import static com.android.server.wm.ActivityTaskManagerService.RELAUNCH_REASON_NONE;
 import static com.android.server.wm.ActivityTaskManagerService.relaunchReasonToString;
+import static com.android.systemui.shared.Flags.enableHomeDelay;
 
 import android.Manifest;
 import android.Manifest.permission;
@@ -521,6 +522,7 @@
 import java.util.concurrent.CountDownLatch;
 import java.util.concurrent.Executor;
 import java.util.concurrent.TimeUnit;
+import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.concurrent.atomic.AtomicInteger;
 import java.util.function.BiFunction;
 import java.util.function.Consumer;
@@ -921,6 +923,15 @@
     @GuardedBy("this")
     final ComponentAliasResolver mComponentAliasResolver;
 
+    private static final long HOME_LAUNCH_TIMEOUT_MS = 15000;
+    private final AtomicBoolean mHasHomeDelay = new AtomicBoolean(false);
+
+    /**
+     * Tracks all users with computed color resources by ThemeOverlaycvontroller
+     */
+    @GuardedBy("this")
+    private final Set<Integer> mThemeOverlayReadiness = new HashSet<>();
+
     /**
      * Tracks association information for a particular package along with debuggability.
      * <p> Associations for a package A are allowed to package B if B is part of the
@@ -2332,6 +2343,7 @@
                 mService.startBroadcastObservers();
             } else if (phase == PHASE_THIRD_PARTY_APPS_CAN_START) {
                 mService.mPackageWatchdog.onPackagesReady();
+                mService.setHomeTimeout();
             }
         }
 
@@ -5304,6 +5316,59 @@
         }
     }
 
+    /**
+     * Starts Home if there is no completion signal from ThemeOverlayController
+     */
+    private void setHomeTimeout() {
+        if (enableHomeDelay() && mHasHomeDelay.compareAndSet(false, true)) {
+            mHandler.postDelayed(() -> {
+                if (!getThemeOverlayReadiness()) {
+                    Slog.d(TAG,
+                            "ThemeHomeDelay: ThemeOverlayController not responding, launching "
+                                    + "Home after "
+                                    + HOME_LAUNCH_TIMEOUT_MS + "ms");
+                    setThemeOverlayReady(true);
+                }
+            }, HOME_LAUNCH_TIMEOUT_MS);
+        }
+    }
+
+    /**
+     * Used by ThemeOverlayController to notify all listeners for
+     * color palette readiness.
+     * @hide
+     */
+    @Override
+    public void setThemeOverlayReady(boolean readiness) {
+        enforceCallingPermission(Manifest.permission.SET_THEME_OVERLAY_CONTROLLER_READY,
+                "setThemeOverlayReady");
+
+        int currentUserId = mUserController.getCurrentUserId();
+
+        boolean updateReadiness;
+        synchronized (mThemeOverlayReadiness) {
+            updateReadiness = readiness ? mThemeOverlayReadiness.add(currentUserId)
+                    : mThemeOverlayReadiness.remove(currentUserId);
+        }
+
+        if (updateReadiness && readiness && enableHomeDelay()) {
+            mAtmInternal.startHomeOnAllDisplays(currentUserId, "setThemeOverlayReady");
+        }
+    }
+
+    /**
+     * Returns current state of ThemeOverlayController color
+     * palette readiness.
+     *
+     * @hide
+     */
+    public boolean getThemeOverlayReadiness() {
+        int uid = mUserController.getCurrentUserId();
+        synchronized (mThemeOverlayReadiness) {
+            return mThemeOverlayReadiness.contains(uid);
+        }
+    }
+
     final void ensureBootCompleted() {
         boolean booting;
         boolean enableScreen;
@@ -18033,6 +18098,10 @@
             mAtmInternal.onUserStopped(userId);
             // Clean up various services by removing the user
             mBatteryStatsService.onUserRemoved(userId);
+
+            synchronized (mThemeOverlayReadiness) {
+                mThemeOverlayReadiness.remove(userId);
+            }
         }
 
         @Override
@@ -19391,6 +19460,11 @@
             return ActivityManagerService.this.clearApplicationUserData(packageName, keepState,
                     isRestore, observer, userId);
         }
+
+        @Override
+        public boolean getThemeOverlayReadiness() {
+            return ActivityManagerService.this.getThemeOverlayReadiness();
+        }
     }
 
     long inputDispatchingTimedOut(int pid, final boolean aboveSystem, TimeoutRecord timeoutRecord) {
diff --git a/services/core/java/com/android/server/wm/RootWindowContainer.java b/services/core/java/com/android/server/wm/RootWindowContainer.java
index 25646f1..609ad1e 100644
--- a/services/core/java/com/android/server/wm/RootWindowContainer.java
+++ b/services/core/java/com/android/server/wm/RootWindowContainer.java
@@ -83,6 +83,7 @@
 import static com.android.server.wm.WindowManagerService.WINDOWS_FREEZING_SCREENS_NONE;
 import static com.android.server.wm.WindowSurfacePlacer.SET_UPDATE_ROTATION;
 import static com.android.server.wm.WindowSurfacePlacer.SET_WALLPAPER_ACTION_PENDING;
+import static com.android.systemui.shared.Flags.enableHomeDelay;
 
 import static java.lang.Integer.MAX_VALUE;
 
@@ -1444,6 +1445,7 @@
             aInfo = info.first;
             homeIntent = info.second;
         }
+
         if (aInfo == null || homeIntent == null) {
             return false;
         }
@@ -1452,6 +1454,11 @@
             return false;
         }
 
+        if (enableHomeDelay() && !mService.mAmInternal.getThemeOverlayReadiness()) {
+            Slog.d(TAG, "ThemeHomeDelay: Home launch was deferred.");
+            return false;
+        }
+
         // Updates the home component of the intent.
         homeIntent.setComponent(new ComponentName(aInfo.applicationInfo.packageName, aInfo.name));
         homeIntent.setFlags(homeIntent.getFlags() | FLAG_ACTIVITY_NEW_TASK);
diff --git a/services/tests/wmtests/src/com/android/server/wm/SystemServicesTestRule.java b/services/tests/wmtests/src/com/android/server/wm/SystemServicesTestRule.java
index 90493d4..295b124 100644
--- a/services/tests/wmtests/src/com/android/server/wm/SystemServicesTestRule.java
+++ b/services/tests/wmtests/src/com/android/server/wm/SystemServicesTestRule.java
@@ -346,6 +346,7 @@
         doReturn(true).when(amInternal).hasStartedUserState(anyInt());
         doReturn(false).when(amInternal).shouldConfirmCredentials(anyInt());
         doReturn(false).when(amInternal).isActivityStartsLoggingEnabled();
+        doReturn(true).when(amInternal).getThemeOverlayReadiness();
         LocalServices.addService(ActivityManagerInternal.class, amInternal);
 
         final ActivityManagerService amService =