Trim polishing

If the exterior trim piece is not anodized jewelers/polishing rouge or flitz works great. If it is anodized, it needs to be stripped, polished, and sealed.

The easy way to strip is to use oven cleaner. Polish with cloth wheel and jewelers rouge. Both are available at big box hardware stores. Personally, after polishing, I took the pieces to be re-anodized before they had the opportunity to tarnish. Anodizing will put a slightly milky finish on the piece.