I've been restoring old photos and hand tinting many of them for years, for a fee. The best papers were semi-matte FB, most notably, Kodak Ektalure G (designed for hand coloring) and various Forte semi-matte FB papers. These brown toned well for hand tinting as transparent oils will not color black shadow areas, but you can add black, or any color, over brown toned shadows. I haven't found a good alternative for these discontinued papers yet. Matte surface has too much tooth, therefore I recommend a smooth semi-matte surface for best results and avoiding the painterly look - the end product should be a 'tinted photograph' not a painted over photograph - the photo should be visible through the tranparent color.