Shrimps don't have the same type of blood we do and do not use hemoglobin. Their "blood" is a substance called hemolymph and contains hemocyanin which turns blue in the presence of oxygen. This would also add to the blue coloration seen where there is a lack of pigment.
That's interesting because just yesterday I lost a berried female tibee that had two eggs on her. I did a little surgery to extract the eggs for artificial hatching attempts and was holding the female shrimp with plant tweezers at the base of her tail. Her tail broke so I moved the tweezers up a bit on her body and there was red liquid coming out of her. I had to keep wiping it off the tweezers as a matter of fact. I had her on a white paper plate so no confusion as to the color. There is nothing red within her body so my thought was that the blood was possibly clear unless in the presence of oxygen then turns red but you say it turns blue. So I wonder what all that red liquid was coming out of the area I squished that shrimp.
She had just died, hadn't turned pink at all and this was where I crushed her...it was slimy and red...looked just like blood. I didn't think it was a chemical that turned them pink I just thought it was the decaying process itself. But I certainly don't know for sure. I saw her get attacked so she had literally been dead less than 10 minutes when I had her out performing 'surgery'.
I have several shrimp that have exhibited white eyes. Some speculation has been as to whether or not they are blind, however from what I have seen, I don't think so.
I'm not sure about the blue albino theory presented, because in blue velvets and blue rilis for instance, the blue is concentrated in different areas and not uniform throughout. If the color was concentrated in a specific pattern, the pattern would not vary as well. (?)
basically, i was just saying that the blue color isnt actually caused by a pigment(unless its concentrated blood?) so, if an albino lacks all pigment, they could still be blue. it isnt really what we think of as an albino, but it doesnt exactly violate the idea either.