Her color deepened, and for a moment she did not meet his eyes.

But she did not really try to pass, and her color deepened.

He thought that the color in her cheeks deepened a little.

Even in the dim light I could see her color deepen.

She gazed into the water, saw the color deepen in her eyes.

Her color deepened as he spoke; otherwise she gave no sign of having heard.

The color deepened a bit when the flesh begin to support the flame.

Despite the prince's patient words, the color of his eyes had deepened to angry red.

He said the reddish color deepens as the fish age.

The color deepened in his face and became an opaque purple.