serioulsy mate, you have to be on it if you want to rock fully polished rims or they will look crap in no time
i have a job on just keeping my centre caps looking fresh and i am always cleaning my car, winter is a killer, best tghing then is to use vasaline on them, but iv since got some plastic winter caps so wont have that prob next winter
if i was you id get the full rim refurbed and paint both parts, the centre a gray or whatever colour you like and the rim silver