Carl, there is a sh1t hot place in Carnoustie that can do these for you.
Friend of mine had his alloys from his Tuscan done there, and his race car , and a rally car
They can do them any colour you like and they come out as new.
Dont have the number or the name, but it cant be hard to find.
If you want I can call matey and get the companys name and number for you.