Cinnamon was a shade of brown named after a certain spice.
The War Doctor wore a double-breasted trenchcoat of cinnamon leather when he helped his previous and future incarnations to prevent the universe from being destroyed by the Void. (COMIC: The Lost Dimension [+]Loading...["The Lost Dimension (comic story)"])
The Tenth Doctor wore a double-breasted Duster-type overcoat of cinnamon brown Alcantara with peaked lapels and a royal blue lining. (TV: The Christmas Invasion [+]Loading...["The Christmas Invasion (TV story)"]-The End of Time [+]Loading...["The End of Time (TV story)"])