The last time the Rangers transitioned into a new ballpark, they left behind a building and a uniform color scheme and Nolan Ryan.
Ryan’s final Major League Uniform Player’s Contract was replaced with a personal services contract with the organization. Blue was replaced with red. Arlington Stadium was replaced, to the south, by The Ballpark in Arlington.
Nolan threw out the first pitch at the first game (an exhibition, to be exact, on April 1, 1994 against the Mets) in the new confines.
When the turnstiles open up for next building, on April 1, 2021, give or take a few days, I don’t know if the uniforms will have changed.