Officially I don’t know. It’s been 25 years since I had one like this.
I do remember seeing a tan to bluish tint change and in the photo the arms in the back right kinda look blue like I remember. I presume this is from the lighting? The green arms look kind of unhealthy, especially in comparison with the frag with extended polyps, presumably from the tan/green colony? Does the green ever show polyps like the frag?
Again, I’m not an expert on the softies, just looking at the photo and wondering what we are looking at with the green arms?
The tank looks great so presumably the parameters are “normal “ for coral health. Let’s see how people respond and what they know about color shifting coral.