Make educational half-sheet black in dark mode

Screenshot: https://screenshot.googleplex.com/tjk37GfrRhO

Bug: 152361557
Test: Manual
Change-Id: I30fffd0af8f4768ac20e6d13899d0e0182b0dec8
diff --git a/quickstep/recents_ui_overrides/res/layout/predicted_hotseat_edu.xml b/quickstep/recents_ui_overrides/res/layout/predicted_hotseat_edu.xml
index c93cad6..b9621e4 100644
--- a/quickstep/recents_ui_overrides/res/layout/predicted_hotseat_edu.xml
+++ b/quickstep/recents_ui_overrides/res/layout/predicted_hotseat_edu.xml
@@ -24,13 +24,13 @@
     <View
         android:layout_width="match_parent"
         android:layout_height="32dp"
-        android:backgroundTint="?android:attr/colorAccent"
+        android:backgroundTint="?attr/eduHalfSheetBGColor"
         android:background="@drawable/bottom_sheet_top_border" />
 
     <LinearLayout
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:background="?android:attr/colorAccent"
+        android:background="?attr/eduHalfSheetBGColor"
         android:orientation="vertical">
 
         <TextView
diff --git a/res/layout/work_profile_edu.xml b/res/layout/work_profile_edu.xml
index 5506b94..c3c7010 100644
--- a/res/layout/work_profile_edu.xml
+++ b/res/layout/work_profile_edu.xml
@@ -23,13 +23,13 @@
         android:layout_width="match_parent"
         android:layout_height="32dp"
         android:background="@drawable/bottom_sheet_top_border"
-        android:backgroundTint="?android:attr/colorAccent" />
+        android:backgroundTint="?attr/eduHalfSheetBGColor" />
 
     <LinearLayout
         android:id="@+id/view_wrapper"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:background="?android:attr/colorAccent"
+        android:background="?attr/eduHalfSheetBGColor"
         android:orientation="vertical"
         android:paddingLeft="@dimen/bottom_sheet_edu_padding"
         android:paddingRight="@dimen/bottom_sheet_edu_padding">
diff --git a/res/values/attrs.xml b/res/values/attrs.xml
index d4cb6d7..2875006 100644
--- a/res/values/attrs.xml
+++ b/res/values/attrs.xml
@@ -35,6 +35,7 @@
     <attr name="widgetsTheme" format="reference" />
     <attr name="loadingIconColor" format="color" />
     <attr name="iconOnlyShortcutColor" format="color"/>
+    <attr name="eduHalfSheetBGColor" format="color"/>
 
     <attr name="folderDotColor" format="color" />
     <attr name="folderFillColor" format="color" />
diff --git a/res/values/styles.xml b/res/values/styles.xml
index a2c0f23..d491296 100644
--- a/res/values/styles.xml
+++ b/res/values/styles.xml
@@ -53,6 +53,7 @@
         <item name="loadingIconColor">#CCFFFFFF</item>
         <item name="iconOnlyShortcutColor">?android:attr/textColorSecondary</item>
         <item name="workProfileOverlayTextColor">#FF212121</item>
+        <item name="eduHalfSheetBGColor">?android:attr/colorAccent</item>
 
         <item name="android:windowTranslucentStatus">false</item>
         <item name="android:windowTranslucentNavigation">false</item>
@@ -106,6 +107,7 @@
         <item name="loadingIconColor">#99FFFFFF</item>
         <item name="iconOnlyShortcutColor">#B3FFFFFF</item>
         <item name="workProfileOverlayTextColor">@android:color/white</item>
+        <item name="eduHalfSheetBGColor">#DD000000</item>
     </style>
 
     <style name="LauncherTheme.Dark.DarkMainColor" parent="@style/LauncherTheme.Dark">