A note of caution/interest: The marlin video is good, but many of us believe that it is not an accurate representation of how Marlin actually color cased their firearms. Jim (on the marlin board) tried to duplicate their process exactly as they showed it in the film, and after failure and experimentation, he also came to this conclusion. Its possible that the color case section was meant to leave Marlins competitors wondering how the hell they get such good colors. Gaddy's articles pretty much explain the entire process, in quite good detail, but its all about finding what works for you.