She did not look at him, but straight in front of her, and her colour darkened.

As he came to Catharine's side, the horn's color darkened to violet.

The deep blue color darkened, deepened until he could see the need pulsing in her.

His color darkened as he went to Alicia in three swift strides.

The pale color darkened, going opaque, and the thing seemed to shrink back.

She said nothing, and his color darkened further.

The color of her flesh darkened from pink to red.

The colors had darkened and she was afraid to wait any longer.

Their color will darken with age, even to the point of turning a chocolate brown shade.

Then Sheila took it, and at once the colors darkened again to the somber blue.