I have a new step bumper and its an unappealing gray primer. What's the best paint to use to match the stainless trim as best as can be done? I see bright silver, chrome paint??? And aluminum color in a can for brush on. Any tips?

 

You have several options........you can get paint to match just about any color you want....IMHO, powdercoating would be best for durability and it comes in a variety of "colors' (including chrome) as well