Well, here are a few photos of the paint job "in the wild". I can't rave about my painting skills, but it seems to work pretty well. I think the black stripes actually help it blend in. Maybe I can call it a "Junior High" paint job, instead of "Kindergarten". Forgive me, Mark? :-)
I need to do something about the sling, though. I'm not sure painting the leather will work, so maybe I'll rig a nylon two-point sling. I like the single point slings, but I think the HK might be a bit heavy for rigging in that manner.