It's buried somewhere in this thread so I'll tell you how I did it. First clean the area with a degreaser and let it dry. Then liberally rub the crayon into the area you want color. Remove as much excess as possible. Then I applied alittle heat using a BIC to melt the wax and smooth it out. While it still I wiped away any more excess that was remaining. I started out by practicing this on the S&W logo one of my mags but then I ended up doing all my mags. Here's how rifle turned out, it still had some extra residue in the pic but you get the idea.
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