I own a black GTP...and yes...it stays dirty year 'round.....
Personally I think that Silvermist or Galaxy Silver looks best on these cars, really sets off the lines of the car.
If my gets resprayed, it's going to be silver.
Also, I love my projectors.....
took forever to aim...
bounced like hell...
look sick.
Finally aimed them and cured the bounce..
Great light output non HID.