>>95930273
You're looking at patterns to make a school of gaunts look like a cohesive beast, which means you want a dark carapace and the rest of the exoskeleton shouldn't steal the attention from the top
and then you want a spot color different than the back patterns for faces and guns

the simplest scheme with the above in mind would be pic related with yellow dots creating two wavy lines at the sides of the carapace