Re: wheel paint?
people that steal bikes paint them like that. they usually paint part of the tire, too.
the paint will flake off the spokes, and the hubs always look crappy because you can't get around the spokes without laying it on thick, so there's runs.
the easiest way to paint the rims only, is to tape the nipples (or straws should work, good idea!) take off the tires, then put the rim on your bike, tape off the forks, spin the wheel really fast and hold the can in one place, and paint the rim as it spins.