Taupe
From Tardis Wiki, the free Doctor Who reference
Taupe was a shade of brown and grey named after the French name for a mole.
The War Doctor wore taupe leather gaiters when he and Petrella escaped a Mark VIII Dalek ambush led by a Type E Supreme Dalek. (COMIC: Ambush)
Brigadier Alistair Gordon Lethbridge-Stewart wore a double-breasted overcoat in taupe over his navy blue suit when braving the Game of Rassilon set up by President Borusa in his quest for immortality. (TV: The Five Doctors)