Snow Globe Paly Coloration

[thewackyreefer]

Hello. I have a colony of Snow Globe Palys I purchased about 6 months ago from Vivid and they have lost a lot of the blue coloration they had when I purchased them. I've tried moving them from the bottom to the middle of my tank however they haven't lightened up much, anyone have any ideas or suggestions on how to get them back to their original color?

I should add that I'm running a 150w 14k MH w/ 2 T5's.

I also have a frag of 5-6 polyps if anyone is interested.