title: Why is my map view callout translucent/transparent and how do I change it's color?
body: <p>I'm on iOS 7 and I have the following problem. I can't find a clue after some research curiously... </p>
  
  <p>I have a map view annotation with left and right accessories but transparent in the middle (default iOS 7 behavior I think). </p>
  
  <p>How to change the default translucent/transparent background to any other color I want?</p>