Collocations for grey - adj.

uniformly
very
The sky looks very grey. I think it's going to rain.

quite (esp. BrE), rather, slightly

dark
light, pale
a light grey suit

charcoal, silvery, slate, steel
His steel gray hair was clipped short as usual.

be
go, turn
He went grey before he was forty.

very
quite, slightly
He'd turned quite grey.

mostly
The old man's beard was mostly grey.

completely
She was completely grey by the age of thirty.

prematurely

Grey is used with these nouns:
afternoon, area, ash, background, beard, cloud, dawn, day, expanse, eye, face, gaze, hair, head, horse, marble, mist, morning, sea, shape, sky, smoke, squirrel, streak, suburb, tone, weather, winter