title: Change Application Bar icon color in light theme - Windows Phone 7
body: <p>I have a favourite icon on the ApplicationBar that I want to change to yellow image when the item is favourited. This works well on Dark Theme but when the user change to White Theme, it becomes black all the time. Actually, the color changes to yellow for around 1 second and then change to black.</p>
  
  <p>I am testing on Windows Phone 7 Emulator, not test with device yet</p>