Chameleon skin is spotty. Lots of spots, lots of colours. I'm no Seurat so the idea of hand drawing hundreds of different coloured spots didn't appeal. I've already started experimenting with a script to do the job for me within Illustrator, more of which here. I've made a couple of modifications to the script to change the colours of the spots as well as changing their lightness and applied the result to this eye piece. Looking good so far!
Don't panic! I'll release the code again when I'm happy with the completed script.