Open Brain colors - good or bad?

[MrKrispy]

Heya,

 

I have a question for all you open brain owners. I have the red morph, and it seems to be doing well: tentacles extended at night, opening and closing, mouth hungrily waiting for food, good red color. However, on one side slightly more facing the light the rim has a bright greenish color similar to the "open" part of it. Would this indicate anything such as too much / too little light? I was worried that maybe I bumped it when I set it in the substrate.

 

Oh, 10g with the 96W CF. Ca ~450ppm, Mg 1400, alk 3.7 meq/L

 

 

Thanks for any info