I use the type they use for to paint automotive motors. You can get them at any automotive store. They are less runny than the ones you get at Home Depot.
I painted my matte black. I think I spent two can ($10 total) on my 90 gallon. Worth every penny.
Make sure you do it outside because the fume & mist is bad for you. (But, you aready knew that too)
![Smile :) :)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)