Diving Boards + Trim

[e30EDUB]

I have an early model vert with diving boards and chrome trim around windows. The chrome trim is scratched up and seems dull in some spots. The diving boards have some stains on them. I'm looking for some recommendations for products or solutions to get these nice and shiny again. Any help is appreciated. Thanks!

[Das Delfin]

I spray painted my trim back to black. I tried polishing the chrome with a chrome polisher and a microfiber towel. But there are better ways