diff --git a/quickstep/recents_ui_overrides/src/com/android/quickstep/util/ClipAnimationHelper.java b/quickstep/recents_ui_overrides/src/com/android/quickstep/util/ClipAnimationHelper.java
index 8ab2eb1..cbac944 100644
--- a/quickstep/recents_ui_overrides/src/com/android/quickstep/util/ClipAnimationHelper.java
+++ b/quickstep/recents_ui_overrides/src/com/android/quickstep/util/ClipAnimationHelper.java
@@ -35,6 +35,7 @@
 import com.android.launcher3.DeviceProfile;
 import com.android.launcher3.R;
 import com.android.launcher3.Utilities;
+import com.android.launcher3.util.Themes;
 import com.android.launcher3.views.BaseDragLayer;
 import com.android.quickstep.RecentsModel;
 import com.android.quickstep.views.RecentsView;
@@ -101,9 +102,7 @@
     public ClipAnimationHelper(Context context) {
         mWindowCornerRadius = getWindowCornerRadius(context.getResources());
         mSupportsRoundedCornersOnWindows = supportsRoundedCornersOnWindows(context.getResources());
-        int taskCornerRadiusRes = mSupportsRoundedCornersOnWindows ?
-                R.dimen.task_corner_radius : R.dimen.task_corner_radius_small;
-        mTaskCornerRadius = context.getResources().getDimension(taskCornerRadiusRes);
+        mTaskCornerRadius = Themes.getDialogCornerRadius(context);
     }
 
     private void updateSourceStack(RemoteAnimationTargetCompat target) {
diff --git a/quickstep/recents_ui_overrides/src/com/android/quickstep/views/TaskMenuView.java b/quickstep/recents_ui_overrides/src/com/android/quickstep/views/TaskMenuView.java
index d15a392..c47e943 100644
--- a/quickstep/recents_ui_overrides/src/com/android/quickstep/views/TaskMenuView.java
+++ b/quickstep/recents_ui_overrides/src/com/android/quickstep/views/TaskMenuView.java
@@ -40,6 +40,7 @@
 import com.android.launcher3.anim.AnimationSuccessListener;
 import com.android.launcher3.anim.Interpolators;
 import com.android.launcher3.anim.RoundedRectRevealOutlineProvider;
+import com.android.launcher3.util.Themes;
 import com.android.launcher3.views.BaseDragLayer;
 import com.android.quickstep.TaskSystemShortcut;
 import com.android.quickstep.TaskUtils;
@@ -270,7 +271,7 @@
     }
 
     private RoundedRectRevealOutlineProvider createOpenCloseOutlineProvider() {
-        float radius = getResources().getDimension(R.dimen.task_corner_radius);
+        float radius = Themes.getDialogCornerRadius(getContext());
         Rect fromRect = new Rect(0, 0, getWidth(), 0);
         Rect toRect = new Rect(0, 0, getWidth(), getHeight());
         return new RoundedRectRevealOutlineProvider(radius, radius, fromRect, toRect);
diff --git a/quickstep/recents_ui_overrides/src/com/android/quickstep/views/TaskThumbnailView.java b/quickstep/recents_ui_overrides/src/com/android/quickstep/views/TaskThumbnailView.java
index 10533ac..7905230 100644
--- a/quickstep/recents_ui_overrides/src/com/android/quickstep/views/TaskThumbnailView.java
+++ b/quickstep/recents_ui_overrides/src/com/android/quickstep/views/TaskThumbnailView.java
@@ -108,7 +108,7 @@
 
     public TaskThumbnailView(Context context, AttributeSet attrs, int defStyleAttr) {
         super(context, attrs, defStyleAttr);
-        mCornerRadius = getResources().getDimension(R.dimen.task_corner_radius);
+        mCornerRadius = Themes.getDialogCornerRadius(context);
         mOverlay = TaskOverlayFactory.INSTANCE.get(context).createOverlay(this);
         mPaint.setFilterBitmap(true);
         mBackgroundPaint.setColor(Color.WHITE);
diff --git a/quickstep/recents_ui_overrides/src/com/android/quickstep/views/TaskView.java b/quickstep/recents_ui_overrides/src/com/android/quickstep/views/TaskView.java
index bea705f..ec0112d 100644
--- a/quickstep/recents_ui_overrides/src/com/android/quickstep/views/TaskView.java
+++ b/quickstep/recents_ui_overrides/src/com/android/quickstep/views/TaskView.java
@@ -52,6 +52,7 @@
 import com.android.launcher3.userevent.nano.LauncherLogProto.Action.Direction;
 import com.android.launcher3.userevent.nano.LauncherLogProto.Action.Touch;
 import com.android.launcher3.util.PendingAnimation;
+import com.android.launcher3.util.Themes;
 import com.android.launcher3.util.ViewPool.Reusable;
 import com.android.quickstep.RecentsModel;
 import com.android.quickstep.TaskIconCache;
@@ -196,7 +197,7 @@
             fromContext(context).getStatsLogManager().logTaskLaunch(getRecentsView(),
                     TaskUtils.getLaunchComponentKeyForTask(getTask().key));
         });
-        setOutlineProvider(new TaskOutlineProvider(getResources()));
+        setOutlineProvider(new TaskOutlineProvider(context, getResources()));
     }
 
     @Override
@@ -514,9 +515,9 @@
         private final int mMarginTop;
         private final float mRadius;
 
-        TaskOutlineProvider(Resources res) {
+        TaskOutlineProvider(Context context, Resources res) {
             mMarginTop = res.getDimensionPixelSize(R.dimen.task_thumbnail_top_margin);
-            mRadius = res.getDimension(R.dimen.task_corner_radius);
+            mRadius = Themes.getDialogCornerRadius(context);
         }
 
         @Override
diff --git a/quickstep/res/drawable/bg_wellbeing_toast.xml b/quickstep/res/drawable/bg_wellbeing_toast.xml
index 22d6f8a..65730f6 100644
--- a/quickstep/res/drawable/bg_wellbeing_toast.xml
+++ b/quickstep/res/drawable/bg_wellbeing_toast.xml
@@ -15,5 +15,5 @@
 -->
 <shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle">
     <solid android:color="#E61A73E8" />
-    <corners android:radius="@dimen/task_corner_radius" />
+    <corners android:radius="?android:attr/dialogCornerRadius" />
 </shape>
\ No newline at end of file
diff --git a/quickstep/res/drawable/task_menu_bg.xml b/quickstep/res/drawable/task_menu_bg.xml
index d5597a9..7334d98 100644
--- a/quickstep/res/drawable/task_menu_bg.xml
+++ b/quickstep/res/drawable/task_menu_bg.xml
@@ -28,8 +28,8 @@
         <!-- Background -->
         <shape>
             <corners
-                android:topLeftRadius="@dimen/task_corner_radius"
-                android:topRightRadius="@dimen/task_corner_radius"
+                android:topLeftRadius="?android:attr/dialogCornerRadius"
+                android:topRightRadius="?android:attr/dialogCornerRadius"
                 android:bottomLeftRadius="0dp"
                 android:bottomRightRadius="0dp" />
             <solid android:color="?attr/popupColorPrimary" />
diff --git a/quickstep/res/values/dimens.xml b/quickstep/res/values/dimens.xml
index 97f2de7..6cbadda 100644
--- a/quickstep/res/values/dimens.xml
+++ b/quickstep/res/values/dimens.xml
@@ -19,9 +19,7 @@
     <dimen name="task_thumbnail_top_margin">24dp</dimen>
     <dimen name="task_thumbnail_half_top_margin">12dp</dimen>
     <dimen name="task_thumbnail_icon_size">48dp</dimen>
-    <dimen name="task_corner_radius">8dp</dimen>
-    <!-- For screens without rounded corners -->
-    <dimen name="task_corner_radius_small">2dp</dimen>
+
     <dimen name="recents_page_spacing">10dp</dimen>
     <dimen name="recents_clear_all_deadzone_vertical_margin">70dp</dimen>
     <dimen name="overview_peek_distance">32dp</dimen>
@@ -61,7 +59,6 @@
        docked_stack_divider_thickness - 2 * docked_stack_divider_insets -->
     <dimen name="multi_window_task_divider_size">10dp</dimen>
 
-    <dimen name="shelf_surface_radius">16dp</dimen>
     <!-- same as vertical_drag_handle_size -->
     <dimen name="shelf_surface_offset">24dp</dimen>
 
diff --git a/quickstep/src/com/android/quickstep/views/ShelfScrimView.java b/quickstep/src/com/android/quickstep/views/ShelfScrimView.java
index d74e880..36521e5 100644
--- a/quickstep/src/com/android/quickstep/views/ShelfScrimView.java
+++ b/quickstep/src/com/android/quickstep/views/ShelfScrimView.java
@@ -53,6 +53,9 @@
     // cover the whole screen
     private static final float SCRIM_CATCHUP_THRESHOLD = 0.2f;
 
+    // Temporarily needed until android.R.attr.bottomDialogCornerRadius becomes public
+    private static final float BOTTOM_CORNER_RADIUS_RATIO = 2f;
+
     // In transposed layout, we simply draw a flat color.
     private boolean mDrawingFlatColor;
 
@@ -87,7 +90,7 @@
         mMaxScrimAlpha = Math.round(OVERVIEW.getWorkspaceScrimAlpha(mLauncher) * 255);
 
         mEndAlpha = Color.alpha(mEndScrim);
-        mRadius = mLauncher.getResources().getDimension(R.dimen.shelf_surface_radius);
+        mRadius = BOTTOM_CORNER_RADIUS_RATIO * Themes.getDialogCornerRadius(context);
         mPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
 
         mShelfOffset = context.getResources().getDimension(R.dimen.shelf_surface_offset);
diff --git a/res/drawable-v28/round_rect_primary.xml b/res/drawable-v28/round_rect_primary.xml
new file mode 100644
index 0000000..53679ed
--- /dev/null
+++ b/res/drawable-v28/round_rect_primary.xml
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+     Copyright (C) 2019 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+       android:shape="rectangle">
+    <solid android:color="?android:attr/colorPrimary" />
+    <corners android:radius="?android:attr/dialogCornerRadius" />
+</shape>
diff --git a/res/drawable-v28/top_round_rect_primary.xml b/res/drawable-v28/top_round_rect_primary.xml
new file mode 100644
index 0000000..5c40df7
--- /dev/null
+++ b/res/drawable-v28/top_round_rect_primary.xml
@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+     Copyright (C) 2018 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+       android:shape="rectangle">
+    <solid android:color="?android:attr/colorPrimary" />
+    <corners
+        android:topLeftRadius="?android:attr/dialogCornerRadius"
+        android:topRightRadius="?android:attr/dialogCornerRadius"
+        android:bottomLeftRadius="0dp"
+        android:bottomRightRadius="0dp"
+        />
+</shape>
diff --git a/res/values/dimens.xml b/res/values/dimens.xml
index 7804133..469b176 100644
--- a/res/values/dimens.xml
+++ b/res/values/dimens.xml
@@ -235,4 +235,8 @@
 <!-- Hints -->
     <dimen name="chip_hint_height">26dp</dimen>
     <dimen name="chip_hint_bottom_margin">194dp</dimen>
+
+<!-- Theming related -->
+    <dimen name="default_dialog_corner_radius">8dp</dimen>
+
 </resources>
diff --git a/src/com/android/launcher3/popup/ArrowPopup.java b/src/com/android/launcher3/popup/ArrowPopup.java
index a229207..28000b9 100644
--- a/src/com/android/launcher3/popup/ArrowPopup.java
+++ b/src/com/android/launcher3/popup/ArrowPopup.java
@@ -82,8 +82,7 @@
     public ArrowPopup(Context context, AttributeSet attrs, int defStyleAttr) {
         super(context, attrs, defStyleAttr);
         mInflater = LayoutInflater.from(context);
-        mOutlineRadius = Themes.getDialogCornerRadius(context,
-                getResources().getDimension(R.dimen.bg_round_rect_radius));
+        mOutlineRadius = Themes.getDialogCornerRadius(context);
         mLauncher = Launcher.getLauncher(context);
         mIsRtl = Utilities.isRtl(getResources());
 
diff --git a/src/com/android/launcher3/util/Themes.java b/src/com/android/launcher3/util/Themes.java
index 17b7e8d..59fd859 100644
--- a/src/com/android/launcher3/util/Themes.java
+++ b/src/com/android/launcher3/util/Themes.java
@@ -32,8 +32,9 @@
  */
 public class Themes {
 
-    public static float getDialogCornerRadius(Context context, float defaultValue) {
-        return getDimension(context, android.R.attr.dialogCornerRadius, defaultValue);
+    public static float getDialogCornerRadius(Context context) {
+        return getDimension(context, android.R.attr.dialogCornerRadius,
+                context.getResources().getDimension(R.dimen.default_dialog_corner_radius));
     }
 
     public static float getDimension(Context context, int attr, float defaultValue) {