There is a trend at school of purses. Help!?!?!?

Well, yes I am shy. I have a purse but it is my Mom's old Dooney and Burke leather purse. I do not like it . I almost got into getting a wallet. ( I am a tomboy somewhat) But I am not allowed to have an oversized bag (school rules). I am attracted to bright and colorful things. But I hate pink, purple and yellow. What type of brands for purses that aren't too girly but appropriate for middle school?