Her skin, face and hands darkened with exposure to the sun but she did not seem to mind.

Kira's skin darkened as the blood rushed to her face.

His skin had darkened under the probing of a warm, friendly sun.

After so many years of symbiosis, her skin had darkened to deepest green.

Again, the skin and eyes of the chestnut will darken quickly.

She blinked as her skin darkened to a rich bronze.

He didn't blush easily, but the skin of his throat darkened a little.

Hamas's red skin darkened at that; and without another word he left the room, followed by the two slaves.

Her skin was darkening a bit, and he wondered why that might be.

He was flushed with amusement, but his skin darkened further at that.