I am not sure what species are in the Chip specifically, but the state is supposed to only have a few species. WI species include the devil, calico, northern clearwater, golden, rusty, virile, white river, and prairie crawfish. Most of these are indeed light brown/reddish gray. The devil crawfish is a nice shade of blue and the golden is...well you guess. You should see the intricate color that can be found in crawfish of the southern US.