Hi guys,
sorry for late reply...

I bought the BCS from Kian Weng Aqua, Penang.
They only sell the shrimp with the name cherry shrimp.

As I know, not much of them really in beatiful black colour.
As I bought them, only 2 of my mature BCS is in the beatiful black.
Another two start to convert into black after 2weeks stable in my planted tank. Previously, both are in dull brown.

I dun hv stock in the moment. But the BCS is getting pregnant.
If the eggs are hatching I'll try to sold out some of them....

the black is natural, not injection...