I used a semi-flat krylon spray paint. It's tricky to take up the painters tape afterward, that's for sure. I'll snap some pics this evening. I did 3 coats, looks jet black behind the glass. As to how well it's adhering, I can't say I really tried to flake it off after drying, but I doubt it's real strong a binding. Can said 'for glass' so I got it.
GT