MeMyself&I wrote:For what I’m doing I don’t think I’ll be going the Gundam marker route, though that’s good info to have stored away.
I’ll look into those brands that you and Ephiane have used/found, so thanks for the recommendations! Good advice on the non-water soluble, I would have never thought it if you didn’t say anything! I’ll be seeing if I can pick something up after work today.
I just mentioned the Gundam thing in case it was relevant -- actually the nipple part of the experiment seems to have been successful, although it is hard to tell, as it is now under layers of whole-body-painting experimentation.

I learned my lesson early on when, in an attempt to get easier blending of oil pastel colors, I had gotten water-soluble oil pastels -- but washing it and ensuring there is no transfer quickly showed me what should have been the obvious problem.
