Pandaemonium Set - RDM, Wrong color?

I was interested in trying the flashy Purgatory set for RDM.

Healers got red flames.
DPS got purple flames.

Red mages got... both?

I'm not sure if it's intended, but it does look weird.

https://imgur.com/a/kIUw2Pf

https://imgur.com/a/kIUw2Pf