Change default alert dialog theme's accentColor

Bug: 17164053
Change-Id: I3ccdb6a8e31a83a42d6b294e5b41aa9d3cd1632a
diff --git a/res/values/styles.xml b/res/values/styles.xml
index 3fb590a..9d0fcd0 100644
--- a/res/values/styles.xml
+++ b/res/values/styles.xml
@@ -29,6 +29,7 @@
         <item name="android:windowContentOverlay">@null</item>
         <item name="android:listViewStyle">@style/ListViewStyle</item>
         <item name="android:overlapAnchor">true</item>
+        <item name="android:alertDialogTheme">@style/AlertDialogTheme</item>
         <item name="activated_background">@drawable/list_item_activated_background</item>
         <item name="section_header_background">@drawable/list_title_holo</item>
         <item name="list_section_header_height">32dip</item>
@@ -167,4 +168,10 @@
         <item name="android:colorAccent">@color/dialtacts_theme_color</item>
         <item name="android:textColorLink">@color/dialtacts_theme_color</item>
     </style>
+
+    <!-- Inherit from Theme.Material.Light.Dialog instead of Theme.Material.Light.Dialog.Alert
+    since the Alert dialog is private. They are identical anyway. -->
+    <style name="AlertDialogTheme" parent="@android:style/Theme.Material.Light.Dialog">
+        <item name="android:colorAccent">@color/dialtacts_theme_color</item>
+    </style>
 </resources>