Rose was a colour.
Rose Tyler wore a rose top while using the dimension cannon to find the Doctor. (TV: Partners in Crime, Turn Left, The Stolen Earth, Journey's End)
During her earlier adventures with the Tenth Doctor, Martha Jones wore a dusty rose tank top with floral symbols. (TV: Smith and Jones, The Shakespeare Code, Gridlock, Daleks in Manhattan/Evolution of the Daleks, The Lazarus Experiment)
Donna Noble wore a rose blouse when she and the Tenth Doctor arrived in 1920s England. (TV: The Unicorn and the Wasp)
Jorjie Turner wore a rose undershirt with her indigo t-shirt. (TV: Taphony and the Time Loop)
In the 20th century, the Torchwood Institute found a device which was rose in colour. (PROSE: Slow Decay)