Pink was a colour.
The Zero Room was pink. (TV: Castrovalva)
The Happiness Patrol painted the Doctor's TARDIS pink. (TV: The Happiness Patrol)
Kalarians and Ukkans had light pink skin. (PROSE: The Final Sanction, TV: Lost Library of Ukko)
In the Mulifane system, pink was the traditional colour of fighting. (AUDIO: Forgotten Lives)
The snow on Nirvana was pink. (AUDIO: World Apart)
The Pink Cichorium was a near-extinct, beautiful, pink plant. The very last of its kind was tended daily by Irene, a botanist who lived alone on the mini-moon of Delphi. (COMIC: Borrowed Time)
Vaagon had a pink sun. Bubbleshake was pink, and came in pink cans. (PROSE: The Highest Science)