If you look under Achievements->Flair and scroll ALL THE WAY to the right.
There's one called Tiki Chic.
It says:
"You wore a pink level 70 "Tiki" helm, armor and weapon from the Isle of Humania!"
Besides it are achievements for wearing the full CRAFTED weapon, armor, and helm sets from Sewers, Nuri's, and Mount Fang.

This leads me to think that there might not even be a crafted set for Humania, simply a bunch of pinks like AO2.