title: Changing the text color of a navigation bar title when "prefersLargeTitles" is set to true
body: <p>I have a requirement in which I have to use a <code>UINavigationBar</code> with a red large title.</p>
  
  <p>Currently, I have the following code:</p>
  
  <pre><code>func prepareNavigationController() {
      let navController = UINavigationController(rootViewController: self)
      navController.navigationBar.prefersLargeTitles = true
      navigationItem.searchController = UISearchController(searchResultsController: nil)
      navigationItem.hidesSearchBarWhenScrolling = false
      navController.navigationBar.titleTextAttributes = [NSAttributedStringKey.foregroundColor.rawValue: UIColor.red]
  }
  </code></pre>
  
  <p>But it's not actually tinting the title label to red. This is the result:</p>
  
  <p><a href="https://i.stack.imgur.com/HFDMV.png" rel="noreferrer"><img src="https://i.stack.imgur.com/HFDMV.png" alt="Ignored title color"></a></p>
  
  <p>But changing <code>prefersLargeTitles</code> to false does the right thing, and my title is red.</p>
  
  <p><code>navController.navigationBar.prefersLargeTitles = false</code></p>
  
  <p><a href="https://i.stack.imgur.com/oQmFS.png" rel="noreferrer"><img src="https://i.stack.imgur.com/oQmFS.png" alt="Tinted Title"></a></p>
  
  <p>I am not entirely sure if this is a bug since at the time of this writing we are still in the first beta, or if this is intentional behavior, mostly because I haven't any of Apple's apps color the large titles before. Is there any way to actually get the large title to have any color I want?</p>