title: ActionBarSherlock shows wrong colors and radio button on dropdown navigation spinner
body: <p>I'm using ActionBarSherlock for ActionBar compatibility.</p>
  
  <p>Everything works great except for the navigation dropdown spinner. </p>
  
  <p>Testing with the emulator on Android 2.3 and below, I get a radio button on the spinner and also the text color is black.</p>
  
  <p>It works well on Android 4+.</p>
  
  <p>How can I remove the button and set the correct colors?
  Thanks.</p>
  
  <p>Example image:</p>
  
  <p><img src="https://i.stack.imgur.com/8bZBL.png" alt="ActionBarSherlock on Android 2.33 emulator"></p>