Mustard (colour)
From Tardis Wiki, the free Doctor Who reference
Mustard was a shade of yellow so called after the substance.
The Eighth Doctor wore a single-breasted waistcoat of mustard velvet. (COMIC: The Pictures of Josephine Day)
The Thirteenth Doctor wore mustard braces to hold up her trousers. (TV: The Woman Who Fell to Earth, COMIC: The Many Lives of Doctor Who, et al.)
Amy Pond once wore a mustard yellow blouse with white polka dots. (TV: The Power of Three)
