Color appearing on shrimp is depending on your water condition. There are too many things you need to take care. Like temperature, Amonia level, PH level, KH level etc.

Just like Kimco said, the blue shrimp color will turn into colorless in time. I personally saw this in my friend's tank. But....it never happen to me. My blue shrimp still blue. And i found any funny thing is...My cherry shrimp...they are colorless in my tank. But after swaping them into other tank. The color turn into red. Otherwise, it is just look like smaller size of yamato only.

The Zebra shrimp i bought...kinda tinny. The stripes on their body much more compact than tiger. Honestly, it is just look like tiger but with more red/brown color bars.

Beside NA, you can goto Melvin place. Pdn Indah area. 012 2322726. He will be at home at nitetime only. Call him before you go. Speak in Cantonese.