Marty is a carpenter extraordinaire! I typically keep a couple of pounds for such fixes. I've also experimented with bleach to lighten the dust for filling nicks in my much lighter toned salon doors and weather cracks in steps. It works, but you need to use less dust to keep the paste more translucent, thereby taking on the color surrounding it. On the tiny knicks, especially on a high gloss surface, I might use resin only, just as it gels.
"I'd rather be happy than dignified".