The best way I have found to enhance color in shrimp is to cull the ones I don't like into their own tank, and since you have 2 shrimp tanks, that may be your best option.I am not concerned of losing shrimp, I understand / understood there will be loss. Mostly wanted to keep them their to help with food clean up since frogs are so sloppy. If anything their populations have blossomed since. They enjoy hunting the young shrimp and microfauna all day, which to me is worth it, they are very happy and healthy / active etc.
Regardless
Thanks
Dominick
