But only the moon was visible in a slate gray sky.

Accordingly, he called a halt for the day as soon as the slate gray sky began to grow darker.

It was a dull pewter under a dark slate sky.

Bruce Bowler looked out the window at the cold slate sky.

Large flakes of snow like crystal parachutes spun and fell from the slate sky.

It was early afternoon, a gray, depressing day, the sun hidden in a slate sky.

Behind, the unassailable hill, enormous, its blackness lit by the slate sky.

But for now, none of the lights are on and that's all there is, black steel and slate sky.

In the slate sky, even smaller than the stars, was a moving pinprick.

The time was middle morning, the sun a tarnished brass disc in the slate sky.