Some color and concept tests I did with my prismacolors. The idea is that these ten-foot-tall giants communicate like humboldt squid or other cephalopods, using a complex system of specialized chromatophores. Their ancestors originally would have used this feature for camouflage, but these sophonts have specialized this system into something used strictly for communication.
The three small examples are meant to be examples of varying stages of social stimulation, going from high-stress/combat at the top to strict formality at the bottom. I also included a coloured sketch of an alien brave in woven armor, because I've been working on the design for a while, and I really liked it.