title: How to change icon color in Xamarin.Forms xaml page?
body: <p>Currently, I am developing a Xamarin.Forms PCL application for Android and iOS. In one of my pages I define a ListView.  The template for the <code>ListView.ItemTemplate</code> displays an icon using <code>&lt;Image Source="some_Icon.png" /&gt;</code>. The icon displays as expected (black) but I have not found a way to set the color.</p>
  
  <p>I would like to colorize this icon based on logic in my ViewModel.</p>
  
  <p>I have searched for answers both through the Documentation and StackOverlflow to no avail.</p>
  
  <ol>
  <li><p>Is there a better way to display and style icons from a Xamarin.Forms PCL project?</p></li>
  <li><p>Does Xamarin.Forms require a set of resource/image files for every possible color I might use?</p></li>
  </ol>