Call them? Should save you a trip down!
I know some places that sell them with colours. Hong Yang sells them but for 1 for a dollar if I remember correctly. Other places sell too but I'm not too sure of the price so you might have to check through this thread. The good thing about the higher price is they have shrimps that have colours. And you might be able to get a few berried ones
Just a heads up, they might look colourless at first at the shop though. But colours up pretty fast back home. Good luck!
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