i do agree with srut n rut, but i did do this once,i took a rem 870 mag and drew with a marker, " branches" on the gun, on the barrel, forend, stock, the whole gun. just a bunch of squigilly lines, dont over do it, and make sure you use a permanent marker. then i spray painted it after taking out the trigger assemblly, with flat tan. you cant paint over ink so it will show through. thats what you want it to do. then i hit the gun with some green. it looked a hole lot better than i expected sold it for 500.00 dont do this to your grandads gun!