I've never seen any but the greenish and the brownish. Camo for the environment, basically. I know bass fishermen often go with a blue jig or blue craw but I didn't know that they are actually blue! When are they blue like that? Never seen one in the streams, rivers I fish.

Used to catch and sell them to my neighbor guys in the summer when I was a kid so I turned a lotta rocks.

Curious, what stage, time of year are they blue?