Window trim

So I've read conflicting information on the N/A window trim before and thought I should just ask ,since no amount of searching brings anything up anymore, is the window trim chrome or polished stainless? A previous owner had a bad paint job done and they hit the trim with a buffer or sander in a few places it looks like. I've tested using plastidip on the trim with great results. However if the trim is made of stainless that I can re-polish I would prefer to do that. Sorry if this has been covered before but search turned up nothing and I can't remember where I read about the trim before. Since I'm about to pull the windows out for a proper paintjob I thought it would be the best time to do something about the trim.