i don't think it looks bad on darker cars, but the issue is that people who put that kind of stuff on their car are people who like to go "look at me! look at me!" darker colors don't really have that kind of presence, with the exception of black maybe. i'd think it'd look good, though. can't wait to get my twilight blue zx5 back from the shop with all the SVT parts on it. that's about as close to a body kit as i'll ever get!
don't let johnny law be an excuse to not modding your car, btw. as a fellow san diegan, i can assure you that there are plenty of CARB-happy mods out there that will really open up you PZEV.
just visiting now....