title: OverLay animation in google map
body: <p>I'm doing my own <code>MyLocationOverlay</code> implementation to bypass extremely slow current position display.</p>
  
  <p>The problem that I've is that I want to make a little <code>animation</code> changing the color of the position <code>marker</code> and the only way I know to redraw is to call <code>invalidate</code> o <code>MapView</code>. But that way I also invalidate all the other overlays. Is there an efficient way if only I want to change color and other overlays don't need redraw? </p>