title: How to change the background color of the UIAlertController?
body: <p>Due to strange behavior of UIActionSheet in iOS 8, I have implemented UIAlertController with UIAction as buttons in it. I would like to change the entire background of the UIAlertController. But I can't find any ways to do it.</p>
  
  <p>Tried even with,</p>
  
  <pre><code>actionController.view.backgroundColor = [UIColor blackColor];
  </code></pre>
  
  <p>But didn't help me out. Any inputs on this regard will be appreciable.</p>
  
  <p>Thanks in advance.</p>