A few things.
Gordon is wearing the gray top with white pants. I presume that means we will mix and match the grays with the current set (which only has white pants currently).
I forget the exact rules, but I don't think you'll see the grays used as a road uniform. "Color on color" games are still pretty rare in college football. Not long ago, Arkansas State was penalized in a road game against Auburn for wearing gray uniforms on the road against Auburn's blue.
https://www.al.com/auburnfootball/2013/ ... _stat.html
I think that will be particularly true because several conference teams have gray home alternates (the Citadel/Mercer) or black (Wofford) or blue (UTC, Samford, ETSU) home uniforms. I guess you could wear them on the road against teams with a sharply contrasting look like Mercer's orange homes, Samfords red alternate, or VMIs red home.
In the video, you can see a player off to the side in the Gray pants. Fortunately, it looks like the purple stripe that is on the white pants is also present on the gray pants.
Also, the grays have uniform numbers on the shoulders instead of stripes.