I just removed the beveled mirror trim on the mirrors in my new house. It wasn't too bad. I used fishing line and to release the adhesive. Slide the fishing line behind the trim and slide it down. You'll need gloves.

Thanks ! Have you ever heard of painting the trim?

I don't have experience painting a mirror, but I would think you could use any glass paint. Why don't you pick up a couple of inexpensive mirror tiles (or maybe a glass shop would give you some mirror scraps) to practice on. Michael's seems to sell quite a variety of glass paints to choose from:

glass window paint/color

Thanks I think I will