I don't think the anemone is bleached from what it looks like in the first pic. LTAs, RBTAs, BTAs all can have an iridescent green cast in the right light. In fact, often when an anemone has developed a rich, dark color one can see that green cast under just the right lighting and angle.
A white, bleached anemone can look neon green because of its natural pigmentation. However, I don't think that's the case with this LTA.