3 Verbs to Use for the Word deepens

Watching her, cap hanging in his gauntleted hand, he saw the colour deepen and deepen in neck and cheek, saw her eyes falter, and turn from him.

And when we turn to human life the tragedy deepens.

She would stand there and brush her hair while she watched the sunset deepen and the swallows circle over the chimney tops.

3 Verbs to Use for the Word  deepens