title: How to set background color of an UIStepper instance?
body: <p>When setting the background color property of an UIStepper object, I get a result as shown:</p>
  
  <p><img src="https://i.stack.imgur.com/dV4oM.png" alt="enter image description here"></p>
  
  <p>Just the corners get colored, not the expected, big background area. Is there a simple solution or does it come to iterating through the stepper's subviews?</p>