Blonde Hair turning Dark

In one of my playthroughs with my Antivan Crow Rook, she has blonde hair but everytime she goes into any shaded area her hair turns pure black. This seems to be a consistent thing that has happened to multiple people. This needs to be fixed. It doesn't make any sense that a blonde haired person's hair would turn black. This only seems to affect gameplay as so far in cutscenes that hair is white.