title: How to change UIPickerView title text color based on position
body: <p>I want to set an UIPickerView so that the title of the row that is selected (in the center) is blue, and the two rows above and below have text color black, and the others color gray..</p>
  
  <p>so it will look something like this</p>
  
  <p><a href="https://i.stack.imgur.com/SfV7L.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/SfV7L.png" alt="enter image description here"></a></p>
  
  <p>is there any way to do this in swift?</p>