I honestly don't think there will be the possibility of changing the time of day, the visor color = different tint theory doesn't seem plausible to me either. I think it was probably what Overdoziz said about the difference in film.
well, like we said earlier, they wouldn't toss out a perfectly good skybox just like that. *snaps fingers*
If you look closely, the skybox texture is very similar in both videos, except the second one simply has an orange tint. Im calling fx on this one.