title: Change color of png in buttons - ios
body: <p>I've got a set of icons that I've created that are transparent white PNGs: </p>
  
  <p><img src="https://i.stack.imgur.com/OpCUC.png" alt="enter image description here"></p>
  
  <p>And what I'd like to do is be able to tint them to other colors. Such as blue, grey, etc.</p>
  
  <p>I've noticed that 'clicked/tapped' they change automatically to a grey. So I assume I can change that grey to whatever I like either with a tap or its normal state:</p>
  
  <p><img src="https://i.stack.imgur.com/yAadu.png" alt="enter image description here"></p>
  
  <p>What would be the best way to achieve this?</p>