Thing is Rob, you can't have two areas overlapping as you'll get stange results when doing stuff with blend modes.
This is a software render in Blitzplus remember, you don't want to re-calculate the alpha of every pixel every frame when only 1 object moved do you.
This is a software render in Blitzplus remember, you don't want to re-calculate the alpha of every pixel every frame when only 1 object moved do you.