Blue Tiger Shrimp started appearing in the hobby in 2007 and are still highly sought after and relatively hard to find. Their popularity is due to their beautiful blue body color combined with bright orange/golden eyes. The blue color does not breed completely true and colors from blonde to extremely dark blue (almost black) can be expected. The orange/golden eyes are a recessive trait and that does breed true. It should be noted that blonde individuals of this species can produce blue offspring but I do not currently understand (and not sure anyone else does) exactly how the color of the parents effects the offspring.
Blue Tigers have vertical black stripes (identical to Tiger Shrimp) and as noted above a blue color that ranges from blonde to extremely dark blue (almost black). Baby Blue Tigers look like regular tigers but as the shrimp grow their blue color will develop and grow darker as the shrimp matures. Blue Tigers that start developing their color when they are smaller generally are a darker blue as adults then individuals that start developing their color later.