title: touchUpInside effect for UIBarButtonItem
body: <p>When <code>left/rightBarButtonItem</code> of <code>UIBarButtonItem</code> is tapped, I do not see the touchUpInside effect. i.e. the color of the button should change. Do I need to implement something here?</p>
  
  <p>I am not able to change the color when I put my finger on the right bar button. I do not see any property called background color on <code>UIBarButtonItem</code>. How to achieve this?</p>