btw... the purple deaths are protopaly...
and those could be PPE... there are three types, well four now... we have both... the true PPE that i came across a couple years back had a white flake/glaze on them like those...
also... those do have a green skirt... when all the polyps died in my tank, my PPE looked just like that... the green almost all went away on the skirts...
it could just be a horrible picture... try to get another picture... change the light spectrum, or even light it up with a flash light or some other light source...