Board Thread:Speculation House/@comment-24097785-20131101022713/@comment-16502426-20140311170155

Not to mention, the whole idea of the show came from Monty basically dreaming about the colors red, white, and black (he added yellow). The entire existence of the show is based around there being four girls of four colors.

Basically, unless one of the actors/actresses suddenly can't voice the part and they have to write the character out of the show (which would probably cripple the series), none of the main 8 are giong away.