Of all the stomatopods I know, Pseudosquilla ciliata is the most variable with respect to color and has the greatest ability to change color to match background. It comes in brown, black, green, yellow, orange, cream and three basic color pattersn, solid, mottled, and longitudinal stripe. We have shown that this is visually mediated and depends at least in part on the color and pattern of the environment, particularly on the color above them. By placing stripes of green on the side of a tank, I mottled sandy colored animals (living on a sand flat in Hawaii) to turn green with a cream stripe down their back (typical of animals living in a grass bed). (Photo attached of this morph.)
The change usually takes a couple of molts.
Roy