Other than Ceracote or Duracoat what methods are available to make a silver barrel a matte black or dark , dark, gray, matte finish. Doesn't need to be permanent but I'd like it to hold up fairly well under normal handling and cleaning with ordinary solvents. Any ideas? I've thought of "Barbecue Paint" and "High Temp Exhaust Paint" but was curious if others have done so and their experience. Just looking for ideas.