Less black, more yellow!

I have met this girl, at university, that has a very strong personality. She distinuishes herself from the others and is very particular. I like her, even sometimes she can be very strange.
She likes rock music and always dresses in black. Everything she has is black! Her lighter is black, her shoes, her hair, her exercise book, her earrings, her phone, her bag! I really can't understand that! The world is coloured for a reason!
So I thing I will buy a yellow sweater, in protest.