Rustoleum 2x cover from home depot is probably the best spray I've found lately.
Goes on thick, so the first light coat is kinda tricky, but after that it's pretty easy.
Their colors seem to work great, spray on and your done, but the black can clog up and spray in globs, and the white sometimes has a powdery finish, and both need extra sanding.
Like stated above, either spray all your coats in one day, 20 minutes or so apart, or wait days for it to fully cure.
One trick I use to avoid orange peeling when using multi colors, is spray Rustoleum automotive clear coat (also from home depot) on your base color, than spray the darts, stripes, or whatever other color over that.
The Rustoleum auto clear coat is the best I've found. Goes on smooth, gas resistant, and leaves a nice, hard coating.