title: How to use presentModalViewController to create a transparent view
body: <p>I am displaying a modal view with</p>
  
  <pre><code>[self presentModalViewController:controller animated:YES];
  </code></pre>
  
  <p>When the view moves up the screen it is transparent as per the setting in the xib file it is created from, but once it fills the screen it goes opaque.</p>
  
  <p>Is there anyway of keeping the view transparent?  </p>
  
  <p>I suspect that the view it is being placed over is not being rendered rather then that the modal view is becoming opaque.</p>