With higher light, it seems to go bluer. Too high, it will go whiteish. Nutrients also play a role as well. When I got my first clump, I couldnt grow it. It faded, got transparent and died. My tank was new and too clean. I couldnt even grow chaeto at this time. I had a spec of this that was caught in a tooth of my overflow since then. That spec grew into what I have now. Currently mine is on the bottom of my tank. 28" deep, 250w helios 20k bulbs.
My hermits climb on it, but i never see them eat it.