Oh, jeez, yes of course. Easy to paint. Just tape off the mirror and spray with high quality spray paint. Look at the diy blog called Livelovediy. She has a nice post about 10 favorite spray paints. Really helpful.

Agree ^^. Use blue painters tape around the edges and cover the remaining areas with newspaper. This will contain the over spray. Remember multiple light coats is better the one thick coat of paint.

http://www.livelovediy.com/2013/07/10-spray-paint-tips-what-you-never-knew.html

This is a great blog. She hasn't posted in awhile, but her blog is SO entertaining, and she is really down-to-earth. She has used all kinds of methods to change the colors of things, and she is very creative with spray paints. Anyone would love this blog. I think I've read every word!