Aperture: Set status bar background color to transparent in settings

* This lets the toolbar fill the background depending on
  collapsed/expanded status

Change-Id: I86d0d2d563dec209213a421dc384c845a264b47b
diff --git a/app/src/main/res/values/themes.xml b/app/src/main/res/values/themes.xml
index e24e215..3afc441 100644
--- a/app/src/main/res/values/themes.xml
+++ b/app/src/main/res/values/themes.xml
@@ -24,7 +24,7 @@
     <style name="Theme.Aperture.Settings">
         <item name="android:switchStyle">@style/Theme.Aperture.Settings.Switch</item>
 
-        <item name="android:statusBarColor">?android:attr/colorBackground</item>
+        <item name="android:statusBarColor">@android:color/transparent</item>
 
         <item name="android:navigationBarColor">@android:color/transparent</item>
     </style>