diff --git a/res/drawable/widgets_list_single_item_ripple.xml b/res/drawable/widgets_list_single_item_ripple.xml
new file mode 100644
index 0000000..b8b6f42
--- /dev/null
+++ b/res/drawable/widgets_list_single_item_ripple.xml
@@ -0,0 +1,41 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+/*
+**
+** Copyright 2021, 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.
+*/
+-->
+<ripple xmlns:android="http://schemas.android.com/apk/res/android"
+    android:color="?android:attr/colorControlHighlight">
+    <item android:id="@android:id/mask">
+        <shape android:shape="rectangle">
+            <corners
+                android:topLeftRadius="@dimen/widget_list_top_bottom_corner_radius"
+                android:topRightRadius="@dimen/widget_list_top_bottom_corner_radius"
+                android:bottomLeftRadius="@dimen/widget_list_top_bottom_corner_radius"
+                android:bottomRightRadius="@dimen/widget_list_top_bottom_corner_radius" />
+        </shape>
+    </item>
+    <item android:id="@android:id/background">
+        <shape android:shape="rectangle">
+            <solid android:color="?android:attr/colorBackground" />
+            <corners
+                android:topLeftRadius="@dimen/widget_list_top_bottom_corner_radius"
+                android:topRightRadius="@dimen/widget_list_top_bottom_corner_radius"
+                android:bottomLeftRadius="@dimen/widget_list_top_bottom_corner_radius"
+                android:bottomRightRadius="@dimen/widget_list_top_bottom_corner_radius" />
+        </shape>
+    </item>
+</ripple>
\ No newline at end of file
diff --git a/res/values-v31/colors.xml b/res/values-v31/colors.xml
index 6baf39e..24aac10 100644
--- a/res/values-v31/colors.xml
+++ b/res/values-v31/colors.xml
@@ -17,17 +17,17 @@
 */
 -->
 <resources>
-    <color name="popup_color_primary_light">@android:color/system_primary_50</color>
-    <color name="popup_color_secondary_light">@android:color/system_primary_100</color>
-    <color name="popup_color_tertiary_light">@android:color/system_primary_300</color>
-    <color name="popup_color_primary_dark">@android:color/system_primary_800</color>
-    <color name="popup_color_secondary_dark">@android:color/system_primary_900</color>
-    <color name="popup_color_tertiary_dark">@android:color/system_primary_700</color>
+    <color name="popup_color_primary_light">@android:color/system_neutral1_50</color>
+    <color name="popup_color_secondary_light">@android:color/system_neutral2_100</color>
+    <color name="popup_color_tertiary_light">@android:color/system_neutral2_300</color>
+    <color name="popup_color_primary_dark">@android:color/system_neutral1_800</color>
+    <color name="popup_color_secondary_dark">@android:color/system_neutral1_900</color>
+    <color name="popup_color_tertiary_dark">@android:color/system_neutral2_700</color>
 
-    <color name="workspace_text_color_light">@android:color/system_primary_50</color>
-    <color name="workspace_text_color_dark">@android:color/system_primary_900</color>
+    <color name="workspace_text_color_light">@android:color/system_neutral1_50</color>
+    <color name="workspace_text_color_dark">@android:color/system_neutral1_900</color>
 
-    <color name="text_color_primary_dark">@android:color/system_primary_50</color>
-    <color name="text_color_secondary_dark">@android:color/system_primary_200</color>
-    <color name="text_color_tertiary_dark">@android:color/system_primary_400</color>
+    <color name="text_color_primary_dark">@android:color/system_neutral1_50</color>
+    <color name="text_color_secondary_dark">@android:color/system_neutral2_200</color>
+    <color name="text_color_tertiary_dark">@android:color/system_neutral2_400</color>
 </resources>
\ No newline at end of file
diff --git a/src/com/android/launcher3/DeviceProfile.java b/src/com/android/launcher3/DeviceProfile.java
index 02571a0..fa19ee6 100644
--- a/src/com/android/launcher3/DeviceProfile.java
+++ b/src/com/android/launcher3/DeviceProfile.java
@@ -17,6 +17,7 @@
 package com.android.launcher3;
 
 import static com.android.launcher3.ResourceUtils.pxFromDp;
+import static com.android.launcher3.Utilities.dpiFromPx;
 
 import android.content.Context;
 import android.content.res.Configuration;
@@ -38,6 +39,8 @@
 import com.android.launcher3.util.DisplayController.Info;
 import com.android.launcher3.util.WindowBounds;
 
+import java.io.PrintWriter;
+
 public class DeviceProfile {
 
     private static final float TABLET_MIN_DPS = 600;
@@ -91,8 +94,10 @@
     public float workspaceSpringLoadShrinkFactor;
     public final int workspaceSpringLoadedBottomSpace;
 
+    private final int extraSpace;
     public int workspaceTopPadding;
     public int workspaceBottomPadding;
+    public int extraHotseatBottomPadding;
 
     // Workspace page indicator
     public final int workspacePageIndicatorHeight;
@@ -109,7 +114,6 @@
     public int workspaceCellPaddingXPx;
 
     public int cellYPaddingPx;
-    public int cellYPaddingOriginalPx;
 
     // Folder
     public float folderLabelTextScale;
@@ -199,8 +203,7 @@
         mInfo = info;
 
         // Constants from resources
-        float swDPs = Utilities.dpiFromPx(
-                Math.min(info.smallestSize.x, info.smallestSize.y), info.metrics);
+        float swDPs = dpiFromPx(Math.min(info.smallestSize.x, info.smallestSize.y), info.metrics);
         boolean allowRotation = context.getResources().getBoolean(R.bool.allow_rotation);
         // Tablet UI is built with assumption that simulated landscape is disabled.
         isTablet = allowRotation && swDPs >= TABLET_MIN_DPS;
@@ -295,22 +298,22 @@
                         + (isScalableGrid ? 0 : hotseatExtraVerticalSize)));
 
         // Calculate all of the remaining variables.
-        int extraSpace = updateAvailableDimensions(res);
+        extraSpace = updateAvailableDimensions(res);
         // Now that we have all of the variables calculated, we can tune certain sizes.
         if (isScalableGrid) {
             DevicePadding padding = inv.devicePaddings.getDevicePadding(extraSpace);
             workspaceTopPadding = padding.getWorkspaceTopPadding(extraSpace);
             workspaceBottomPadding = padding.getWorkspaceBottomPadding(extraSpace);
 
-            float hotseatBarBottomPadding = padding.getHotseatBottomPadding(extraSpace);
-            hotseatBarSizePx += hotseatBarBottomPadding;
-            hotseatBarBottomPaddingPx += hotseatBarBottomPadding;
+            extraHotseatBottomPadding = padding.getHotseatBottomPadding(extraSpace);
+            hotseatBarSizePx += extraHotseatBottomPadding;
+            hotseatBarBottomPaddingPx += extraHotseatBottomPadding;
         } else if (!isVerticalBarLayout() && isPhone && isTallDevice) {
             // We increase the hotseat size when there is extra space.
             // ie. For a display with a large aspect ratio, we can keep the icons on the workspace
             // in portrait mode closer together by adding more height to the hotseat.
             // Note: This calculation was created after noticing a pattern in the design spec.
-            extraSpace = getCellSize().y - iconSizePx - iconDrawablePaddingPx * 2
+            int extraSpace = getCellSize().y - iconSizePx - iconDrawablePaddingPx * 2
                     - workspacePageIndicatorHeight;
             hotseatBarSizePx += extraSpace;
             hotseatBarBottomPaddingPx += extraSpace;
@@ -794,6 +797,93 @@
         }
     }
 
+    private String pxToDpStr(String name, float value) {
+        return "\t" + name + ": " + value + "px (" + dpiFromPx(value, mInfo.metrics) + "dp)";
+    }
+
+    public void dump(String prefix, PrintWriter writer) {
+        writer.println(prefix + "DeviceProfile:");
+        writer.println(prefix + "\t1 dp = " + mInfo.metrics.density + " px");
+
+        writer.println(prefix + "\tisTablet:" + isTablet);
+        writer.println(prefix + "\tisLargeTablet:" + isLargeTablet);
+        writer.println(prefix + "\tisPhone:" + isPhone);
+        writer.println(prefix + "\ttransposeLayoutWithOrientation:"
+                + transposeLayoutWithOrientation);
+
+        writer.println(prefix + "\tisLandscape:" + isLandscape);
+        writer.println(prefix + "\tisMultiWindowMode:" + isMultiWindowMode);
+
+        writer.println(prefix + pxToDpStr("windowX", windowX));
+        writer.println(prefix + pxToDpStr("windowY", windowY));
+        writer.println(prefix + pxToDpStr("widthPx", widthPx));
+        writer.println(prefix + pxToDpStr("heightPx", heightPx));
+
+        writer.println(prefix + pxToDpStr("availableWidthPx", availableWidthPx));
+        writer.println(prefix + pxToDpStr("availableHeightPx", availableHeightPx));
+
+        writer.println(prefix + "\taspectRatio:" + aspectRatio);
+
+        writer.println(prefix + "\tisScalableGrid:" + isScalableGrid);
+
+        writer.println(prefix + "\tinv.minCellWidth:" + inv.minCellWidth + "dp");
+        writer.println(prefix + "\tinv.minCellHeight:" + inv.minCellHeight + "dp");
+
+        writer.println(prefix + pxToDpStr("cellWidthPx", cellWidthPx));
+        writer.println(prefix + pxToDpStr("cellHeightPx", cellHeightPx));
+
+        writer.println(prefix + pxToDpStr("getCellSize().x", getCellSize().x));
+        writer.println(prefix + pxToDpStr("getCellSize().y", getCellSize().y));
+
+        writer.println(prefix + "\tinv.iconSize:" + inv.iconSize + "dp");
+        writer.println(prefix + pxToDpStr("iconSizePx", iconSizePx));
+        writer.println(prefix + pxToDpStr("iconTextSizePx", iconTextSizePx));
+        writer.println(prefix + pxToDpStr("iconDrawablePaddingPx", iconDrawablePaddingPx));
+
+        writer.println(prefix + pxToDpStr("folderCellWidthPx", folderCellWidthPx));
+        writer.println(prefix + pxToDpStr("folderCellHeightPx", folderCellHeightPx));
+        writer.println(prefix + pxToDpStr("folderChildIconSizePx", folderChildIconSizePx));
+        writer.println(prefix + pxToDpStr("folderChildTextSizePx", folderChildTextSizePx));
+        writer.println(prefix + pxToDpStr("folderChildDrawablePaddingPx",
+                folderChildDrawablePaddingPx));
+
+        writer.println(prefix + pxToDpStr("cellLayoutBorderSpacingPx",
+                cellLayoutBorderSpacingPx));
+        writer.println(prefix + pxToDpStr("desiredWorkspaceLeftRightMarginPx",
+                desiredWorkspaceLeftRightMarginPx));
+
+        writer.println(prefix + pxToDpStr("allAppsIconSizePx", allAppsIconSizePx));
+        writer.println(prefix + pxToDpStr("allAppsIconTextSizePx", allAppsIconTextSizePx));
+        writer.println(prefix + pxToDpStr("allAppsIconDrawablePaddingPx",
+                allAppsIconDrawablePaddingPx));
+        writer.println(prefix + pxToDpStr("allAppsCellHeightPx", allAppsCellHeightPx));
+
+        writer.println(prefix + pxToDpStr("hotseatBarSizePx", hotseatBarSizePx));
+        writer.println(prefix + pxToDpStr("hotseatCellHeightPx", hotseatCellHeightPx));
+        writer.println(prefix + pxToDpStr("hotseatBarTopPaddingPx", hotseatBarTopPaddingPx));
+        writer.println(prefix + pxToDpStr("hotseatBarBottomPaddingPx", hotseatBarBottomPaddingPx));
+        writer.println(prefix + pxToDpStr("hotseatBarSidePaddingStartPx",
+                hotseatBarSidePaddingStartPx));
+        writer.println(prefix + pxToDpStr("hotseatBarSidePaddingEndPx",
+                hotseatBarSidePaddingEndPx));
+
+        writer.println(prefix + "\tisTaskbarPresent:" + isTaskbarPresent);
+
+        writer.println(prefix + pxToDpStr("taskbarSize", taskbarSize));
+        writer.println(prefix + pxToDpStr("nonOverlappingTaskbarInset",
+                nonOverlappingTaskbarInset));
+
+        writer.println(prefix + pxToDpStr("workspacePadding.left", workspacePadding.left));
+        writer.println(prefix + pxToDpStr("workspacePadding.top", workspacePadding.top));
+        writer.println(prefix + pxToDpStr("workspacePadding.right", workspacePadding.right));
+        writer.println(prefix + pxToDpStr("workspacePadding.bottom", workspacePadding.bottom));
+
+        writer.println(prefix + pxToDpStr("extraSpace", extraSpace));
+        writer.println(prefix + pxToDpStr("workspaceTopPadding", workspaceTopPadding));
+        writer.println(prefix + pxToDpStr("workspaceBottomPadding", workspaceBottomPadding));
+        writer.println(prefix + pxToDpStr("extraHotseatBottomPadding", extraHotseatBottomPadding));
+    }
+
     private static Context getContext(Context c, Info info, int orientation) {
         Configuration config = new Configuration(c.getResources().getConfiguration());
         config.orientation = orientation;
diff --git a/src/com/android/launcher3/Launcher.java b/src/com/android/launcher3/Launcher.java
index c57f621..89c0f66 100644
--- a/src/com/android/launcher3/Launcher.java
+++ b/src/com/android/launcher3/Launcher.java
@@ -2634,6 +2634,7 @@
         mDragLayer.dump(prefix, writer);
         mStateManager.dump(prefix, writer);
         mPopupDataProvider.dump(prefix, writer);
+        mDeviceProfile.dump(prefix, writer);
 
         try {
             FileLog.flushAll(writer);
diff --git a/src/com/android/launcher3/widget/picker/WidgetsListHeaderViewHolderBinder.java b/src/com/android/launcher3/widget/picker/WidgetsListHeaderViewHolderBinder.java
index f126321..e57f4d8 100644
--- a/src/com/android/launcher3/widget/picker/WidgetsListHeaderViewHolderBinder.java
+++ b/src/com/android/launcher3/widget/picker/WidgetsListHeaderViewHolderBinder.java
@@ -52,7 +52,9 @@
     public void bindViewHolder(WidgetsListHeaderHolder viewHolder, WidgetsListHeaderEntry data,
             int position) {
         WidgetsListHeader widgetsListHeader = viewHolder.mWidgetsListHeader;
-        if (position == 0) {
+        if (mWidgetsListAdapter.getItemCount() == 1) {
+            widgetsListHeader.setBackgroundResource(R.drawable.widgets_list_single_item_ripple);
+        } else if (position == 0) {
             widgetsListHeader.setBackgroundResource(R.drawable.widgets_list_top_ripple);
         } else if (position == mWidgetsListAdapter.getItemCount() - 1) {
             widgetsListHeader.setBackgroundResource(R.drawable.widgets_list_bottom_ripple);
diff --git a/src/com/android/launcher3/widget/picker/WidgetsListSearchHeaderViewHolderBinder.java b/src/com/android/launcher3/widget/picker/WidgetsListSearchHeaderViewHolderBinder.java
index 37713e1..b98f5e1 100644
--- a/src/com/android/launcher3/widget/picker/WidgetsListSearchHeaderViewHolderBinder.java
+++ b/src/com/android/launcher3/widget/picker/WidgetsListSearchHeaderViewHolderBinder.java
@@ -53,7 +53,9 @@
     public void bindViewHolder(WidgetsListSearchHeaderHolder viewHolder,
             WidgetsListSearchHeaderEntry data, int position) {
         WidgetsListHeader widgetsListHeader = viewHolder.mWidgetsListHeader;
-        if (position == 0) {
+        if (mWidgetsListAdapter.getItemCount() == 1) {
+            widgetsListHeader.setBackgroundResource(R.drawable.widgets_list_single_item_ripple);
+        } else if (position == 0) {
             widgetsListHeader.setBackgroundResource(R.drawable.widgets_list_top_ripple);
         } else if (position == mWidgetsListAdapter.getItemCount() - 1) {
             widgetsListHeader.setBackgroundResource(R.drawable.widgets_list_bottom_ripple);
diff --git a/tests/res/layout/test_layout_appwidget_dynamic_colors.xml b/tests/res/layout/test_layout_appwidget_dynamic_colors.xml
index c5ab030..21625c6 100644
--- a/tests/res/layout/test_layout_appwidget_dynamic_colors.xml
+++ b/tests/res/layout/test_layout_appwidget_dynamic_colors.xml
@@ -18,7 +18,7 @@
         <ImageView
             android:layout_width="24dp"
             android:layout_height="24dp"
-            android:background="@android:color/system_primary_500"/>
+            android:background="@android:color/system_neutral1_500"/>
     </LinearLayout>
     <LinearLayout
         android:orientation = "horizontal"
@@ -32,7 +32,7 @@
         <ImageView
             android:layout_width="24dp"
             android:layout_height="24dp"
-            android:background="@android:color/system_secondary_500"/>
+            android:background="@android:color/system_accent1_500"/>
     </LinearLayout>
     <LinearLayout
         android:orientation = "horizontal"
@@ -46,7 +46,7 @@
         <ImageView
             android:layout_width="24dp"
             android:layout_height="24dp"
-            android:background="@android:color/system_neutral_500"/>
+            android:background="@android:color/system_neutral2_500"/>
     </LinearLayout>
 
     </LinearLayout>
\ No newline at end of file