if you use spray paint make sure you sand the wheel down a little so the paint will stick better. it is not $22. there website says it is about $4. im not sure how many bottles you would need im guess just one but i have never done it before.

http://www.ritdye.com/Liquids.28.51.5.9.lasso -liquid
http://www.ritdye.com/Powders.28.51.6.29.lasso -powder