Support material design for Radio band menu

Bug: 24892294
Change-Id: I56c8c29165ce88cef2791d89e20ac0cc3249bbb2
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index ceea92e..7d64c16 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -2079,7 +2079,7 @@
 
         <!-- TODO: Is this needed? -->
         <activity android:name="BandMode"
-                  android:theme="@android:style/Theme.Dialog"
+                  android:theme="@android:style/Theme.Material.Light.Dialog.Alert"
                   android:process="com.android.phone">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />