title: Swift restore original image color after casting a tint
body: <p>I have an image, inside a <code>UIImageView</code>, that comes with a default color, let's say a custom grey. <br>
  In my code at some point I set a different <code>tint</code> in this way</p>
  
  <pre><code>myImageView.image = myImageView.image!.withRenderingMode(.alwaysTemplate)
  myImageView.tintColor = someCondition() ? UIColor.red : UIColor.lightGray
  </code></pre>
  
  <p>The fact is that I am not able to get back to the image's original grey color. My question is if there is a way to substitute the <code>UIColor.lightGray</code> part of my code with something telling the <code>UIImageView</code> <strong>not</strong> to use any tint, but its original color.</p>