Analysis of information sources in references of the Wikipedia article "Detroit Tigers" in Simple English language version.
They also had blue jerseys for batting practice at home starting in 1994. Those didn't have numbers on the front, but they had orange, white and blue striping on the top, as well as the Tiger walking through the Olde English D on the front.
Much like Tigers caps during the regular season, the navy jerseys will feature white trim for lettering and numbers for home games, and orange for the road games.