PHILADELPHIA (CBS) -- The Eagles tweeted this video on Thursday, announcing that they will indeed wear their black uni's.

Earlier, they tweeted this video as a hint.

The 7-1 Eagles will host the 3-4 Broncos on Sunday. They're 7.5-point favorites.

The Broncos, who are winless on the road, will start QB Brock Osweiler vs. the Eagles. For the Eagles, new running back Jay Ajayi -- acquired in a trade this week -- hopes to make his Eagles debut.