Purple

Eggplant was a dark shade of purple, named after the fruit eggplant.

The War Doctor wore an eggplant purple scarf. (COMIC: The Lost Dimension)

The Eighth Doctor wore an ascot tie of eggplant dupioni. (COMIC: A Matter of Life and Death)

The Eleventh Doctor wore a single breast frockcoat of eggplant cashmere throughout the latter half of his life, (TV: The Bells of Saint John, The Day of the Doctor, et al.) leading up to his death and regeneration into the Twelfth Doctor (who consequently spent his first moments in that same shirt). (TV: The Time of the Doctor)

The Ninth Doctor wore an eggplant sweater. (TV: The Empty Child, The Doctor Dances)

Martha wore a dress of eggplant taffeta. (TV: The Lazarus Experiment)

Donna wore an eggplant sweater when she corrected the paradox. (TV: Turn Left)

Emma-Louise Cowell wore an eggplant shirt while adapting to the 21st century. (TV: Out of Time)