Write on the line! And the thin black words will vanish.
(Anne Kellas, “How to Get Rid of the Layer of Snow”, quoted by Tim Thorne, launching The White Room Poems in Rochford Street Review)
A disadvantage of carbon fibre for consumer products is that, being composed of graphite, they are black and impart this colour to the composite.
(N. G. McCrum, C. P. Buckley, & C. B. Bucknall, Principles of Polymer Engineering 6.2)