I always automatially personify the ponies as white because I guess I'm tribal or something idk
i don't think it's tribal. for me, i see and associate with more white people than black people, and i'm white, so i immediately think of white people before any other colored folk.
plus, the only character who actually
acts (mostly accent) like a black person in the series is zecora
also, i hate it when artists depict the humanized main six as black (this seems common for twilight), because again, they don't act like them so it doesn't really connect