I want to paint the grille surround on my 2011 GT to match the body color. I would like advice on what paint to use, prep steps, etc. I found this site which offers spray paint matched by color code:

http://www.automotivetouchup.com/spray_paint.asp

I have some experience painting plastic; I painted my Xbox case many years ago with great success, although it did not have to stand up to the battering of an automotive grille. Is there anything I should be aware of going into this project? Is the site I linked above a good source for paint, or should I look elsewhere? I'm new to this game, so any advice would be appreciated