are you ******* kidding me? First of all, do i really need to remind you that bungie essentially set up the foundation for Halo 4, so if you're pissed that they have forerunners in the game, you need to be pissed at bungie. PLUS some key people from bungie helped make the game, sooo...
Also, they only showed such a minor portion of his face that he is still pretty much faceless. You already knew he was white from the books, so it's not anything shocking. On a side note, i think they took that last split second out because me and my friend just beat it and it wasn't there.