I managed to disassemble the mirrors from my wife's 89 260E and repaint them. I wasn't easy to separate the back but take it slow and it can be done without damaging anything (I removed the mirrors from the doors). A small plastic trim tool worked well instead of a screw driver. I wetsanded the backs, epoxy primed and top coated body color and they look great. They even survived me clipping one on the sliding garage door that I hadn't opened far enough.