title: How to definitively set UITabBar background color and tint color
body: <p>I have been trying to set my <code>UITabBar</code>'s tint color and background color for quite some time now and nothing seems to work. 
  So far I have tried:</p>
  
  <pre><code>tabBarController?.tabBar.backgroundColor = UIColor.orangeColor()
  tabBarController?.tabBar.barTintColor = UIColor.whiteColor()
  </code></pre>
  
  <p>as well as:</p>
  
  <pre><code>UITabBar.appearance().tintColor = UIColor.orangeColor()
  </code></pre>
  
  <p>Neither of these seemed to have any effect on my tab bar. I'd also like to mention that I have the VC embedded in a navigation controller for which the global tint color that I set works perfectly fine.</p>