change of color...

[Kevin 1G Drummer]

^^ And have it look like a bass boat and have the texture of sandpaper?? Ick.

PPG makes a couple different levels of quality. OMNI is the low end, DBC is their middle of the road color/clear, and their Global refinish system is top shelf stuff. The shop I work at sprays Speis/Hecker color and clearcoat and it's very high quality, but also very high priced. Valspar makes a decent quality paint that is also pretty cheap, but I'm not sure if they have a basecoat/clearcoat line.

As far as better/worse colors in black, there really aren't any that are "better" than another. The only difference would be the pearl/metallic flake in the basecoat. I would suggest that you just look through some color match books and use whatever the school shop has on the mixing bank. Chances are, it's decent quality.
EDIT: Damnit Boostcreep. you got in the way