title: Android how to get gradient effect on setBackgroundColor
body: <p>Is there a way to get a gradient effect or a semi-transparant effect when setting the background color of a view? For example, this code:  </p>
  
  <pre><code>selView.setBackgroundColor(Color.rgb(240, 128, 128)); // light red
  </code></pre>
  
  <p>highlights a selected view in a list view. Either a gradient or a background would be cool.</p>