title: Customize theme in actionbar-sherlock does not work
body: <p>I know that there are varios questions about customized theme for actionbar-sherlock. I also try the accepted answer but no thing change. Here is my theme:</p>
  
  <pre><code>&lt;resources&gt;
  
      &lt;style name="Theme.Styled" parent="Theme.Sherlock.Light.DarkActionBar"&gt;
          &lt;item name="actionBarStyle"&gt;@style/Widget.Styled.ActionBar&lt;/item&gt;
          &lt;item name="android:actionBarStyle"&gt;@style/Widget.Styled.ActionBar&lt;/item&gt;
      &lt;/style&gt;
  
      &lt;style name="Widget.Styled.ActionBar" parent="Widget.Sherlock.Light.ActionBar.Solid.Inverse"&gt;
          &lt;item name="background"&gt;@drawable/actionbar_background&lt;/item&gt;
          &lt;item name="android:background"&gt;@drawable/actionbar_background&lt;/item&gt;
          &lt;item name="backgroundSplit"&gt;@drawable/actionbar_background&lt;/item&gt;
          &lt;item name="android:backgroundSplit"&gt;@drawable/actionbar_background&lt;/item&gt;
      &lt;/style&gt;
  
  &lt;/resources&gt;
  </code></pre>
  
  <p>And here is my activity declaration:</p>
  
  <pre><code> &lt;activity
              android:name="com.ihnel.tinyapp.xskt.Home"
              android:theme="@style/Theme.Styled"
              android:configChanges="orientation|keyboard" /&gt;
  </code></pre>
  
  <p>My applciation will run on android 2.1+, so I declare the android version as: </p>
  
  <pre><code>   &lt;uses-sdk
      android:minSdkVersion="7"
      android:targetSdkVersion="17" /&gt;
  </code></pre>
  
  <p>I want to set new background to the actionbar sherlock as well as new text font for the title but I can't. Please tell me where is my mistakes to make this works. </p>
  
  <p>UPDATE: Java source
  I user overlay actionbar style:</p>
  
  <pre><code> requestWindowFeature(Window.FEATURE_ACTION_BAR_OVERLAY);
  </code></pre>
  
  <p>Here is the code to add menu items:</p>
  
  <pre><code>public boolean onCreateOptionsMenu(com.actionbarsherlock.view.Menu menu) {
      menu.add("Search")
              .setIcon(R.drawable.ic_action_search)
              .setActionView(R.layout.search_edittext)
              .setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_COLLAPSE_ACTION_VIEW);
      SubMenu sub = menu.addSubMenu("Theme");
      sub.add(0, R.style.Theme_Sherlock, 0, "Default");
      sub.add(0, R.style.Theme_Sherlock_Light, 0, "Light");
      sub.add(0, R.style.Theme_Sherlock_Light_DarkActionBar, 0, "Light (Dark Action Bar)");
      sub.getItem().setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_COLLAPSE_ACTION_VIEW);
  
      return true;
  };
  </code></pre>
  
  <p>Thanks .</p>