I know, this is an older post, but I would use liquid shoe dye. It comes in a bottle and looks like liquid shoe polish, but it's a dye, not a polish! It dries flat. You can do the whole holster, then spend a few hours with water dampened cotton balls and paste shoe polish for a "spit shine", keep rubbing it in until it shines! Don't just apply it and remove it, keep rubbing it in and applying more. Ask me how I know this!!!