The Falcons will be wearing their throwback uniforms from the 1966 and 1967 seasons. They were 4-23-1 in that time but are undefeated (2-0) since last season in the retro jerseys. The 49ers will be facing the red-orange helmets with black jerseys instead of the standard black helmets with red jerseys. The white pants, of course, remain the same.
Despite the fact they look angry, I'm certain it's not because of the uniforms. Maybe.