PE Zoas Changing Colors

[HiImSean]

I've got a few different PE zoas, purple, green, agaves, etc., but a few have changed colors. i got a nice little colony of greens that are about half green and half purple. also i have 2 different colonies of blue agave. the first one i started out with 1polyp and has grown to about 7. the red use to be a nice vibrant red but is now a deep red but still has the nice white markings. any idea what causes this, im assuming lighting but the only thing i've changed is the intensity on my AI Sols.

 

[revhtree Verified Admin]

Honestly there are so many variables that can cause this.