The Lions will wear alternate uniforms in 2016, and will be a part of the NFL's Color Rush program.
What color they will be is still a mystery.
Team president Rod Wood met with reporters at the owners' meetings in Florida on Tuesday, and admitted he has seen the uniforms. He would not reveal the color.
Thursday Night Football games began the solid-color on solid-color games this past season, but the Lions declined to be a part of it.