I think grey still is acceptable, at least until the martians start demanding equal rights.

I think terms like “legal grey area” don’t have the same connotations as black/white do, because “grey” isn’t really used as an adjective for a person.

I still refer to our oldschool Linux admins as greybeards. I think that’s okay because there’s like 5 oldschool female Linux admins in the world and they are chill as hell.