Charcoal (colour)
From Tardis Wiki, the free Doctor Who reference
Charcoal be a dark shade of grey
The War Doctor wore charcoal leather gaiters up to his death. (TV: The Day of the Doctor)
Amy Pond wore a bomber jacket of charcoal leather. (TV: The Pandorica Opens|The Big Bang)
Donna Noble wore a charcoal scarf when she met Rose. (TV: Turn Left)