Brown
From Tardis Wiki, the free Doctor Who reference
Wood was a dark shade of brown named after the substance which forms trees.
The War Doctor wore a double-breasted trenchcoat of wood leather with peaked lapels when he and Petrella escaped a Mark VIII Dalek ambush led by a Type E Supreme Dalek. (COMIC: Ambush)
The Tenth Doctor wore a wood brown tie with semi-random floral design of cornflower blue flowers and bronze foliage when he helped to foil the 1562/2013 Zygon Invasion of Earth and when he revisited the Fall of Gallifrey.. (TV: The Day of the Doctor)
Bertie Potts wore a double-breasted frock coat of tan tweed with wood brown overchecks. (AUDIO: The Boundless Sea-The Rulers of the Universe)
