Once the question was asked, he turned serious and his face reddened.
His face reddened with the effort to make himself angry.
His face reddened with anger, as if he didn't like the response.
The boy's face reddened; he shook his head but said nothing.
His face reddened, and she thought he was going to scream at her.
Her beautiful face reddened with the effort to hold the tears back.
His face had reddened, perhaps from the weather, the wine or blood pressure.
Then, abruptly, she let go of him and turned away, her face reddening.
He did not like that, and his face reddened a shade.
But his face was reddening, and she looked at him oddly.