I am going to make a batch of gel food and want to add some good color enhancers. Does anyone have any good suggestions?

Krill is a wonderful color-enhancing food

I've heard that spriulina is good for oranges/reds , but not so much for black.

Can I find krill at a pet store? And if so, how is it packaged (frozen or freeze dried).

Both fish are white and orange, though Firefly is mostly white, with just a little bit of orange on her fins and tail, but even that is very pale. I want to see if I can brighten it up a bit.

I get my Krill from P3T-Sm@rt.. I get the frozen cubes..Their Orange.. Parasite free also.. They love them..I paid about $3.00..

I ordered freeze-dried Krill from Goldfish Connection. Tonight was my first feeding, and they ate it up!

Some algaes have natural color enhancers. There are a few brands that sell a number of dried marine algaes (still good for freshwater fish) including brown, green, and red. You may need to look in the marine foods section as that is their usual customer base.