1. It was black as night at new moon and white as frost at first light.

2. See: (as) black as coal at the coalface be raking over the Coals black as night blow the Coals canary in a coal mine carry Coals carry Coals to Newcastle coal in (one's) stocking Coals of fire Coals to Newcastle Coals to Newcastle, to carry/bring drag (one) over the Coals haul (someone) over the Coals haul somebody over the Coals haul someone over the