I wouldn't pay too much attention to that. I actually wear a lot of black.
I'd pay more attention to what excites her.
Is she a chameleon? People who don't know me well could mistype me pretty easily because different people bring out different sides of my personality (I try to avoid being around people who bring out the sides I dislike).
Does she make connections rapidly? Does she (mistakenly) ask questions that an F could consider boundary-crossing? Is she extremely frank? Do you always feel like she's ready to pull a little prank? Is she unconcerned with strangers' opinions of her?
If yes, you could be spotting an ENTP!