Override the overscroll color for the widget rows.

Change-Id: I249e13f511736ad9e874800a1b9ee1f8602434f4
diff --git a/res/layout/widgets_list_row_view.xml b/res/layout/widgets_list_row_view.xml
index ced5648..1d593df 100644
--- a/res/layout/widgets_list_row_view.xml
+++ b/res/layout/widgets_list_row_view.xml
@@ -51,6 +51,7 @@
 
     <HorizontalScrollView
         android:id="@+id/widgets_scroll_container"
+        android:theme="@style/Theme.Dark.CustomOverscroll"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:scrollbars="none">