We’re working on an Android application that shows information about parkings on a map. The problem is that the icons on the map are rendered with a “dark glow” around them.
If you see the image, the glow is surrounding most of the icons, but not all of them, and we can’t find any property (i.e.: highlight) that could be responsible for such behavior. All of the icons are on the same layer.
Any ideas?
Thanks!

I believe, it is a drop shadow rather than border. Did you override draw method when extending ItemizedOverlay?
Try this:
Example taken from:
It is possible to remove the Shadow of the Icons (items) on a googlemap?
and Is it possible to use OverlayItem.setMarker() with no shadow?
Try that, make sure you declare @Override on draw method too.