your latest two images are not of the same material as the first three, though upon second glance, I do see the purplish layer you mention in that first image.
as a rule, things that just look alike don’t belong in the same observation unless they were observed in the same place at the same time and you have good reason to believe that they are the same organism. were these images taken at the same place and time? were the two specimens relatively near to each other?