So I watch my ghost shrimp eat almost every time I feed them. I love it. I have a 10 gal, and all it has is a bunch of java moss and java fern, 2 cory cats, 5-6 ghost shrimp, and a few rams horn snails. While watching them today, I noticed one had literally turned a deep cobalt blue. I would take a picture if I had a camera to do it with, but I am certain it isn't it's stomach just turning from the food. It looks like its exo-skeleton has blue veins in it almost. One has it very vividly, and another has it a bit more faintly. They are completely transparent otherwise, and are acting normally. I have searched and cannot find anything about this. I am also certain that it isn't developing eggs, as I know what that looks like, and this is throughout the body, tail and all. Ideas?