slaty

Adjective

 * 1) Resembling the mineral slate.
 * 2) * 1933-03, Clark Ashton Smith, "The Isle of the Torturers", Weird Tales:
 * Their faces and hands were yellow as saffron; their small and slaty eyes were set obliquely beneath lashless lids; and their thin lips, which smiled eternally, were crooked. as the blades of scimitars.