title: How to change the color of navigation bar on a specific view
body: <p>I need to change the color of my navigation bar on only some specific views.
  There are many discussions about modifying the color of navigation bar, like <a href="https://stackoverflow.com/a/18870519/938380">https://stackoverflow.com/a/18870519/938380</a>, but they all change the color of navigation bar on every views under the same navigation hierarchy.</p>
  
  <p>I want to change the color on <strong><em>specific views</em></strong> and keep other views the same color. How do I achieve this?</p>