Her mane and coat are actually white, but because of a spell she screwed up in her filly days, she has black parts moving through her mane like some Rorschach biz.

Has a habit for wearing bandannas around her neck and not properly fixing her hair.
She's very friendly and creative, often doing numerous fun things than what is more responsible to do, like studying.
She often wanders the Canterlot gardens despite living in Ponyville.
Her hobbies include composing electronic music, drawing stuff, writing stories, and making friends despite not always wanting to hang out with all of them.
She utterly despises Mathematics, and only enjoys doing it when rewarded with ice cream and pizza.