I have textured him. I started with a very contrasting bright yellow and black, copying the classic wasp colour scheme. It really looked silly so I began to introduce a brown/purple colour that washed over and blended the contrasted colours better. I looked at octopus reference photos but they all look so different but what they all seem to have in common is that the colour patterns are very noisy and mixed up. I added white bumps to mimic some reference images I found and it helped blend the overall look from an insect to more of a sea creature but still keeping the yellow black wasp markings.