title: MvvmCross UINavigationController customise navigationBar
body: <p>Further to my experiences with MvvmCross, I've managed to build an app for iPhone which starts with a TabBarController. I can also successfully navigate within each tab to deeper levels. The problems start when I want to customise the navigationBar on the deeper levels - setting the backButton colours, etc. The code I use for navigation is the standard viewModel code -</p>
  
  <pre><code>this.RequestNavigate&lt;InJourneyViewModel&gt;();
  </code></pre>
  
  <p>…which works fine, but I can't do anything to the navigated-to view's navBar, other than set its title.</p>
  
  <p>Any thoughts or advice appreciated!</p>