Today I painted the stone pillars. It's a very simple paint job - base coat in dark gray, a couple of layers of drybrush in lighter grays, then go over it with a dark wash. I'm not thrilled with it - it's a little too stark. I will make some adjustments next time. The other issue isn't showing up much in the pictures, but is very visible live. The purple ink from the pen I used to etch the stone shapes is bleeding through the paint, and turning all the grooves pink. Next time I'll go over the grooves with black paint to try to fix that.