Imoen is purple now?

So I just rolled a new character in EE and it looks like this time around Imoen decided that she wanted to be purple:

http://steamcommunity.com/sharedfiles/filedetails/?id=132178962

My first 2 playthroughs she was her normal magenta colour. Since playing through the Black Pits, she's now purple every time.

Do NPCs have a history of changing colors? Is it a bug brought on by playing BP? Am I crazy?