title: Setting Android Theme background color
body: <p>I'm trying to modify the default background theme color, which should be easy but surprisingly I can't get it working. Please note that I want the change to be across the entire app, not just for a single activity. Here is my code: </p>
  
  <p>styles.xml</p>
  
  <pre><code>&lt;resources&gt;
  
      &lt;color name="white_opaque"&gt;#FFFFFFFF&lt;/color&gt;
      &lt;color name="pitch_black"&gt;#FF000000&lt;/color&gt;
  
      &lt;style name="AppTheme" parent="android:Theme.Light"&gt;
          &lt;item name="android:background"&gt;@color/white_opaque&lt;/item&gt;
          &lt;item name="android:windowBackground"&gt;@color/white_opaque&lt;/item&gt;
          &lt;item name="android:colorBackground"&gt;@color/white_opaque&lt;/item&gt;
      &lt;/style&gt;
  
  &lt;/resources&gt;
  </code></pre>
  
  <p>and of course in the manifest</p>
  
  <pre><code>&lt;application
      .
      .
      .
      android:theme="@style/AppTheme" &gt; 
  &lt;/application&gt;
  </code></pre>
  
  <p>Android doc which I consulted on modifying themes:
  <a href="http://developer.android.com/guide/topics/ui/themes.html" rel="noreferrer">http://developer.android.com/guide/topics/ui/themes.html</a></p>
  
  <p>I've tried switching between white_opaque and pitch_black for all the xml attributes but it doesn't change a thing. Any suggestions?</p>