title: How to completely colorize UIPopoverPresentationController background color?
body: <p>I'm working with a Day and Night Mode for an app.
  The problem is, when just setting the background color of a view AND THEN using it as "presenting as popover" there are little white artifacts (see the picture)</p>
  
  <p>Is there an easy way to fix this?
  Do I may have to write my own UIView?</p>
  
  <p><a href="https://i.stack.imgur.com/11bB6.png" rel="noreferrer"><img src="https://i.stack.imgur.com/11bB6.png" alt="enter image description here"></a></p>