title: iPhone Set Tint Color of Back Bar Button Item
body: <p>I am trying to set the tint color of the back button within a navigation controller, but nothing is working.  I have tried </p>
  
  <pre><code>[self.navigationController.backBarButtonItem setTintColor:myColor];
  //myColor was previously set
  </code></pre>
  
  <p>But it stays the default tint</p>