title: How to change the background colour of a toolbar in ExtJS4
body: <p>I am trying to change the background color of a toolbar. Right now, I am having ext-classic theme. I want toolbar background color to be dark blue, but this color change should NOT be applicable for all the toolbar's being created. Can someone guide me on how I can do this particular thing?</p>
  
  <p>Thanks in advance..</p>