Since you are looking for a darker wheel, I would suggest you purchase the 2005 OEM 18's from the sedan (look at my avatar if you don't know which wheels I am referring to).

These wheels are a bit of a gunmetal color, and would look good on your car without breaking the bank.

You should be able to find an almost brand new set for less than $1,300 with tires.

Good luck, and please get your hideous powdercoated wheels away from your beatiful car.