title: highlight background effect
body: <p>Is there an Android effect to highlight a background like with jQuery :
  <a href="http://docs.jquery.com/UI/Effects/Highlight" rel="nofollow">http://docs.jquery.com/UI/Effects/Highlight</a>
  I want to make a degrade on a Layout when I click on it...</p>
  
  <p>Or do we have to do it programmatically?</p>