title: How to change navigation bar title color?
body: <p>I tried to change title color like this, but it has no effect.</p>
  
  <pre><code>NSDictionary *navbarTitleTextAttributes = [NSDictionary dictionaryWithObjectsAndKeys:[UIColor whiteColor], NSForegroundColorAttributeName, nil];
  [[UINavigationBar appearance] setTitleTextAttributes:navbarTitleTextAttributes];
  </code></pre>
  
  <p>Maybe the problem that navigationbar style is black?</p>
  
  <pre><code>self.navigationController.navigationBar.barStyle = UIBarStyleBlack;
  </code></pre>