So you take a B/W photo, colorize it, and suddenly you have more information to work with? The "information" you have created is the colorization and is artificial. Yes, it may be helpful to get a witness to remember something he saw or recognize someone he knows, but if you have to use "colorization" of a B/W photo to enable "enhancement", you are trying to create facts from fiction.
The guy who did the enhancements worked with both B/W and colorized versions. He did it to help out. Why you keep bringing up the stuff about the enhanced photos at trial is beyond me. The cops have the original ATM photos which clearly show his face.