Black pack changed color of diffuser and wheels to a near satin black.
Our car's wheels were sent out by the dealer for powder coating and the carbon stripes were added by them too. It was a 2 year old leftover, but it's not clear if these appearance changes were done when dealer first got the car, or in an effort to move the car.
I'd suggest you consult a respected powdercoater in your area. Blackpack was an option that substituted stock parts, so it was only priced at $495(??). No dealer could deliver you a fresh diffuser and 4 extra wheels in black for that price, including labor changing parts and tires. Since dealers appear to be used to this request for wheel color changes (exotic car dealers get these requests from ballers I guess) all the time, be careful if you go to dealer to be clear what work they'd be doing, as they're likely to just add their profit while subbing the important work out (quality powder coating.)
If you're handy and have all the right tools (including 4 proper jackstands) I'd wait until you were ready for a new set of tires. Buy tires (tire rack?) Then, make an appt. with best powdwercoater you can find in your area, lift your car, remove all 4 wheels & diffuser & anything else you want coated like fuel filler. Take wheels to tire shop and get rubber pulled including valve stems. Take all to powdercoater, and wait for call that they're done. Take wheels back to tire shop, and then home to refit everything. Labor cost saved not doing this at dealer to do all these steps and coordinate all of this for you could save you the price of the powdercoating or even the tires. Even before I owned a pickup, I'd do it this way with several trips with car trunks. IMO, this is the fun part of modding. You're your own general contractor.
Regarding jack stands, do your homework here regarding lift points, flat stand heads, and not trying to do this job with only ramps, a jack, and a driveway. I've got a lift at home with a 2 point jack. Even with that, it takes careful planning to get cars with all 4 shoes off in importantly stable position. Cars like to surprise you with weight distribution.
-kARL