You Vibe's color is most likely "Platinum" a.k.a. "Satellite".
viewtopic.php?f=33&t=15802&p=477826
The code is found by looking at the "Service Parts Identification" sticker pasted inside the glove box.
http://www.automotivetouchup.com/paint- ... ontiac.htm
Try a pick-a-part search like
http://car-part.com/ or find the part number and do a google search on it.