We've got the same problem - the handles have turned a sort of pale grey/purple colour and really stand out against the van which is still nice and white. I've tried all the recommended cleaners, including the steel wool, waxing, and although some have worked short-term, the handles quickly discolour again. I would really now like to replace them. Problem is, how to remove them. Ours is a 2001 Swift, and I can't see anything to allow access to screws, fixings, etc. Surely you don't have to get to them from inside the wall panels? Rob_jax, any ideas?
Usually I would just go along to the dealers, play the 'helpless' woman, and a service engineer comes along and tells you in great detail how your husband should do it! Problem is, mine doesn't have the time! (Fitted a Heki rooflight, myself, by asking..... and it's not leaking yet!!).