Buggy Old Guadalajara?

[KoobyKarasu]

ohai, me again
So, i was trying to make a poster of my new unusual (Yey disco beat down), which is an Old Guadalajara painted Noble Hatter's Violet, i'm using that plugin-thing in the workshop, forgot the name, and when i try to paint it, it becomes black (Only the paintable portions)(Dark blue if i use the BLU skin of the hat) with a red line (Line unexistant for BLU team as it's already blue), this seems to be true to all dar-ish paints, and bright ones, such as Abundance of Tinge don't even change the color, i hope someone can tell me a way to fix this
tl:dr, Old Guadalajara is broken pls fix