You can tell the first one isnt, I cant say for the second allthough it does look very healthy. But there are indeed purple colored finger leathers whether they be capnella, lemnalia, or sinularia out there. There not going to be as rich and vivid as a puple SPS coral but are just as beautifull in there own right in my own opinion.
Ive seen them personally myself as well, There usually a pale greyish purplish color when polyps are retracted and kinda purplish brown polyps with a greyish purple base when extended. I use to see them more frequently when starting this hobby but now the softy diversity has kinda gone down with everyone and there uncle going to stony corals.
The dyed corals are usually a very vivid color like bright yellows,purples and fuschia.
-Justin