title: setting tint color for selected tab in UITabBar
body: <p>In Xcode 5 Dev Preview 2, I was able to execute the following:</p>
  
  <p><code>[[UITabBar appearance] setTintColor:[UIColor whiteColor]];</code> //the color of the selected image and text (white)</p>
  
  <p>In Xcode 5 Dev Preview 3, the same line of code throws an exception (see below).  The exception indicates that I may want to use '<code>barTintColor</code>' - but I do not - as this is the color of the overall UITabBar.  How can I set the color of the selected image and text in a UITabBar?</p>
  
  <p>The new exception in Xcode 5 Dev Preview 3:</p>
  
  <pre><code>*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-setTintColor: is not allowed for use with the appearance proxy. Perhaps you want to use the barTintColor property.'
  </code></pre>
  
  <p>Thank you</p>