The site in question is
here. Since it's in Korean (I think), I can't make heads or tails of much of the text myself.
The female skintone is definitely by
Peggy. The male skintone, however, I can't quite put my finger on. I've seen it before, but I'll be damned if I can remember where now. It does seem quite similar to
male skintones done by Lady Frontbum.