I think the next step will be painting the stonework on the base. After that, I'm still not quite sure how to paint the Dweller himself. I'll just have to see what I come up with I guess.
Well, it didn't go quite as planned, and the only pictures I have now are of the largely finished model. Still not quite sure if I like the paint scheme, but at least it is painted.
The skin is Chaos Black primer with Adeptus Battle Grey highlights. The green "veins" (for lack of a better term) are painted Dark Angels Green, with a thinner stripe of Goblin Green in the middle. The tongue and eyes are also painted this way. The mane is painted Vermin Brown with Snakebite Leather highlights, though it doesn't show up all that well. The claws/talons are painted Tin Bitz, with a Badab Black wash, and the horns on the head are painted Graveyard Earth with Komando Khaki highlights, followed by a Badab Black wash.
In any event, it is nice to have him painted, though I'm still not sold on the paint job :p