slate-gray

The belt's reddish brown coloration seems to have disappeared, leaving only a light slate-gray residue behind.

A 700-pound polar bear, he lives in the Central Park Zoo, sharing a large slate-gray quarry of rock, both real and fake, with Lily and Ida.

Two slate-gray F-15s, gulping fuel, roar up out of the shimmering heat of a runway at Langley Air Force Base in Hampton, Va., then cut in the afterburners and belch fire as they initiate a perfectly coordinated, tandem turn up and to the right.

"I fell like I've been on a submarine for nine months," he says lightly, looking out the window at the slate-gray Canadian sky, streak with freezing rain.