Well, just my blue LED's are on now. I turned on my lighting system and it went from shriveled up to opening. The top layer is thin, and it looks like tentacles of some kind on the outer edges, I can't tell. With the blue LED's you can definitely see it has a shade of green in it.
I do have a green toadstool in the tank, a purple devil's hand, and that finger leather. I used my claw/arm thingy and touched the thing and it did close up a minute later. It has a tubelike center though which is what through me off. I just noticed this today, I'm not sure its been there more then a few days.