Here are a couple photos of the delivery I got yesterday after almost 24 hours. The color on most is fairly normal but these two are more ash or charcoal than blue.
The first one really is just grey, there is no tints of blue of yellow, perhaps it is a mutation or just still stressed from shipping.
Oddly colored OEBT
Ash Colored tiger #2
Jason Wechsler
Orange Eyed Blue Tiger Shrimp Blog (OEBT) 