Yellow
From Tardis Wiki, the free Doctor Who reference
Royal yellow was a bright shade of yellow.
The Sixth Doctor wore royal yellow trousers with black stripes; (TV: The Twin Dilemma) right up to his death caused by the First Rani. (AUDIO: The Brink of Death; TV: Time and the Rani) His successor, the Seventh Doctor, spent his first hours in the yellow trousers before switching for new trousers of grey-brown tweed with tartan symbols and burgundy braces. (TV: Time and the Rani)
Ruby Sunday wore a royal yellow dress during an adventure in 1813. (TV: Rogue)
