It's not that big of a deal, but imperial stormtrooper officers wore black uniforms. Gray uniforms like in this game were worn by navy officers : r/StarWarsBattlefront
Star Wars Black Series: Tala (Imperial Officer, Obi-Wan Kenobi) – Mighty Underground
Taeyue Grand Admiral Thrawn Kostüm Imperialer Offizier Uniform Weißer Anzug für Halloween Cosplay Outfits für Erwachsene Männer, S : Amazon.de: Fashion
Orthar's Imperial Officer on Tumblr: Galactic Knights Costuming Club Imperial Stormtrooper Corps Major R'rith
Imperial military uniforms | Wookieepedia | Fandom