become dark

"He's very handsome. Rupert's blond-haired and blue-eyed in the book, but he's become dark and dark-eyed. But he’s very sexy."

The funnel clouds that drop from thunderheads appear white at first and only become dark from the debris in their lifting whirlwinds.

For people in that strip, known as the path of totality, the sky will become dark as night and the temperature might drop.

For people viewing the eclipse from locations where the moon’s shadow completely blocks the sun, known as the path of totality, the sky will become dark.

In a large, dry skillet over medium-high heat, toast the cashews until they become dark brown in spots, about 2 minutes.