photshop these wheels to gunmetal/machine grey/"steel"

yeah, i was hoping someone could help me trying to figure out if i want to go aftermarket or just modify stock wheels.

so, if you can do them in a grey/machined silver/gunmetal type color itd be great.

i dont own either of these yet but itd save me a hell lot of trouble if i decide before i get the car what i want to do.

http://www.camaroz28.com/forums/picture.php?albumid=18&pictureid=1083

http://www.camaroz28.com/forums/picture.php?albumid=18&pictureid=1084


images arent mine either, jus saying.