Her eyes, darkened by a mix of pleasure and surprise, flew open.

His eyes darkened with what looked to Sam like a distant echo of pain.

The prisoner's eyes darkened; no fool, he had grasped the point at once.

His eyes darkened as the stench rose from the smokey pile.

Diana scowled at him and her eyes darkened with anger.

The hint of yellow in his eyes darkened as his anger increased.

As he watched the mental image, his eyes darkened in fascination.

And it increased further as the gray of his eyes darkened on her.

The moment he stepped across the threshold of their bedchamber, his eyes darkened with desire.

He must have read her thoughts for his eyes darkened to burnished gold.