I don't think it will affect the clear parts of your rilis. It doesn't tint, dye, or otherwise change the color of anything. Crimson is a blend of spirulina (which is known to enhance color in just about anything), montmorrilonite clay(which has been shown to enhance the color and overall health of most things, especially shrimp), and various minerals.
It functions to enhance colors that already exist in the shrimp. That said, if it turns your TT's into red shrimp with black stripes, you'll be rich