Hi, I'm new on here so hope I'm using this very helpful forum appropriately... I had to custom order a corner steel (12 gauge) hearth pad for a wood stove I'm having installed later this week. I'd like to paint it a flat black, but don't know which paint is best to use. This stove doesn't require an R value. I've seen reference here to "metal paint", but don't know which would be appropriate. Hoping not to have something that leaves black smudges on anything that comes in contact with it. Thanks so much for any suggestions!