title: How to customize / style a UIPopoverController
body: <p>I'm working on an iPad application and I'm using UIPopoverControllers. I'm at the part where the app needs to be branded and styled and i'm wondering how to change the color / tint of the UIPopoverController? Standard is dark blue but it needs to be another color..</p>
  
  <p>is this possible?</p>
  
  <p>Greets, Thomas</p>