Mustard (colour)

Mustard was a shade of yellow named after a substance.

The Eight Doctor wore a a single breast 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, etc.)

Amy Pond wore a mustard yellow blouse with white polka dots. (TV: The Power of Three)