I painted mine with Valspar "Satin Black" latex paint. You can get it at Lowes. They had pre-mixed quarts available and ready to go. I used a foam roller and just rolled it on. Took two coats to get it nice and even but it looks great. The only difficult part was getting it to fill in the edges next to the black frame without smearing everywhere.
I'm sure if you don't have a Lowes nearby you can find something similar at Home Depot or whatever.
Thanks. I think this is the route I wanna go. Latex would be easy to remove later if I decided to do that.
BTW... I just finished looking at your 75g journal. Looks great. I'm thinking very strongly about your C02 setup in this tank, or maybe the 38 gal. Your growth is AMAZING.