Jones said the teams's seniors voted unanimously to wear the "smokey gray" uniforms.
The Vols will be back in gray for their game against Vanderbilt on Saturday.
On Tuesday evening, Coach Butch Jones said the teams's seniors voted unanimously to wear the "smokey gray" uniforms.
Tennessee previously wore Smokey gray uniforms Oct. 5 for a 34-31 overtime loss to Georgia. That marked the first time Tennessee had used an alternate uniform since wearing black jerseys for a 31-13 victory over South Carolina on Oct. 31, 2009.
Saturday's game is the last home game for the Vols this season, and is senior night.
Jones said that "we talked about the gray becoming more standard a little bit in our football program, so it's just something with our seniors, that they wanted to do, and I think it's a reward for them."
The Vols play Vandy at 7:00 p.m. in Neyland Stadium and the game will air on ESPN2.
The Associated Press contributed to this report.