Semblance noun – A display of emotion or behavior that is insincere or intended to deceive. Appearances and semblance are semantically related. Sometimes you can replace term "Appearances" with "Semblance", this nouns are similar.
In the game's artbook, the character designer refers to this trope (from his end at least) as a "believable lie": How to give characters distinctive appearances while maintaining some semblance of military decorum.