The Walt Disney is just one of those acros that can dramatically alter its colors basically due to everything and anything. From what I've seen, if it's a dark shade of green, sorta purple tips, without a doubt not getting enuff light. Mine sits in like 450 par under t5s and I have yet to see any blue.
I think we might be looking for a unicorn trying to get that royal blue color. The only ones I have seen with that color were under heavy blue lighting. Mine looks that color when I turn the color all the way down on my kessils and turn off my T5s. That being said, I think it is a beautiful acro with the light purple, pink, green and the gold polyps. I think every coral pictured here looks pretty sharp.