Blue cats come in a variety of colors from blue to black to grey. I have even caught a bright white bodied blue catfish that had dark black spots on all its fins. Had to ask my guide buddy Steve Shiele what the heck it was. He called it a piebald blue catfish and said they are the rarest of all catfish in North America...you fish long enough you are going to see some weird [censored].
There is a fine line between fishing and floating around like an idiot!!