Those black faces look absolutely ghastly with the pastel colours. They really should haven gone with white faces given that iOS7 has a white colour base. I hope at least the white model gets a white face. I so wanted a more saturated yellow back and white face.
If you look at the pics on the front page, there is a white iPhone 5C with a black front. I agree with you, I think a white front would probably look better. I actually would have preferred the phone being one color completely. Like all blue and all red.