Quote Originally Posted by [-Polo GTI-] View Post
why not just take it off and give it a decent coat of Forever Black or the ol' favourite Kiwi shoe polish. both have proved to work a treat!

it'll look like new then.
Cos it's a different plastic to the exterior trim; it's much less porous so the shoe polish wipes on and wipes straight off. And leaves applicator marks everywhere

Forever black will do the job, if I can ever be bothered to get around to it..