" The Denarian was basically humanoid, as most of them were, a gaunt, even skeletal grey-skinned figure. Spurs of bone jutted out from every joint, slightly curved and wickedly pointed. Greasy, lanky hair hung from its knobby skull to its skinny shoulders, and its two pairs of eyes, one very human brown and one glowing demonic green, were both wide and staring in shock. "

― Jim Butcher , Small Favor (The Dresden Files, #10)