Great model from Games Workshop from 2016 (I think). I went for a physchedelic voodoo shaman vibe to give the impression that the model was mid spell-casting (and definitely on some kind of mushrooms)
I avoided standard colours for anything, starting with his skin. I went for a skeleton vibe with black/grey with subtle skull on his face. Red/orange robes, green strings and bones mostly blue. The skull on his staff uses a variety of colours with yellow and blue highlights