I enjoyed utilizing my typical green/purple mixes on this guy, for almost every surface. Those two colors found their way into skin, metal and cloth colors.
These are more muted greens and purples, of course. Some are warmer of cooler, but balancing them next to each other is always a fun challenge.
You can see these transitions quite easily on the skin, as some areas are almost purple... and others sections punctuated by greenish grays. Those two colors are very complimentary to each other. When you mix them to make a gray, you get a gray that will be tinted one way of the other, depending on how much of each color is mixed in.
He's also here: