Hey everyone, I was hoping to get some pointers on non bake ceramic coatings

Hey y’all, just wanted to ask if anyone knows of a non bake ceramic coating that comes in multiple colors and can be applied in a layer of roughly ≤1mm thick.

I have a barbell I’m trying to save from rust and if the coating is too thick. I worry that the knurling of the bar will become too smooth and I will not be able to grip it properly.

Any and all feedback is much appreciated.