title: remove translucent bar in navigation bar created with storyboard
body: <p>I created a navigationController from the storyboard and now i'm trying to remove it's translucent option</p>
  
  <p>I've put this on my appdelegate.m</p>
  
  <pre><code>[[UINavigationBar appearance] setBarTintColor:[UIColor colorWithRed:52.0/255 green:152.0/255 blue:219.0/255 alpha:1]];
  [[UINavigationBar appearance] setTintColor:[UIColor whiteColor]];
  
  [[UINavigationBar appearance] setTranslucent:NO];
  </code></pre>
  
  <p>But this is crashing my app with a nonsense error, so I'm not sure if this is the right approach.</p>
  
  <p>I have found this similar question but didn't solved my problem:
  <a href="https://stackoverflow.com/questions/228319/navigation-controller-transparent-bar-style-is-not-working">Navigation Controller Transparent Bar Style is not working</a></p>
  
  <p>But I'm not sure how to do that because I don't have a variable navController since I created my navigationController from the storyboard. How can I call the storyboard navigation controller programmatically and do something like that?</p>
  
  <p>Thanks</p>