Today our complements are yellow/violet, and red-orange/blue-green.
Cross Complementary Tetrad Bear
Sticking with the cool light/warm shadow idea, I used the blue-green and violet on the light side of the bear, the yellow and red-orange on the shadow side. It would be interesting to try this scheme in other combinations, maybe using one set of complements for the light side, one for the shadow side. So many things to explore, so little time. Two more color schemes, and we're on to other things.