Purple vilida

[Reeferamir1]

Hey guys
Gotta question, I got a purple vilida and a bonsai coral that are not too happy in the tank. They have lost the intense color they once had and are brownish now. I have read that is caused by not enough light. All other corals are doing great just these two. Any suggestions? I moved them higher up as well to give them more intensity of light but no luck yet.