Lighting to bring out the colors in corals

[trilinearmipmap]

I bought a "Green bubble coral" at J & L, it looked greenish in their store, at home it looks pink.

I bought an "Electric Green Mushroom Rock" at Denman Pet gallery, it looked like bright neon green in their store, at home it looks green like a pine tree color.

The Ricordea I ordered from Ocean Aquatics looks like a mud grey color under my lights, I'm sure it is supposed to look purplish or blue or green.

My lights are 8 T5 bulbs: 4 x 6500 K, 2 x actinic, 2 x "Blue Plus".

If I swap out the 6500K bulbs for 10000K bulbs will this bring out my green colors better, also what will it do to the red colors in my tank?

[Fish]

My understanding is that the closer you get to 20K the more the colors will stand out. Most people who run 20K bulbs do it for the great colors they get. It seems on one end of the spectrum 6500k is fast growth and the other end 20000K is good looks.

- Chad