I think if you want to give it a shot go for it.
Like most anything even anemones are subject to slightly different colors under different lighting in different tanks etc.
I have seen one like that once that wasn't bleached and it stayed a quite vibrant purple color, but other than that im unsure what color this could be bleached from.
Unfortunately only one real way to find out- so if you think you'd like it anyway go for it, but if you're weary and wouldn't be happy if it could change color, I'd hold off.