1.   Her hands were stained black from the tokens she had been dropping into the machine.

2.   His fingers are stained black from cracking walnuts all morning.

3.   His gaze kept returning to the house, its white-washed walls stained black by flames and smoke that billowed from the windows.

4.   His gaze kept returning to the ruins of the house, its white-washed walls stained black by flames and smoke that poured from the windows.

5.   She picks bits of leaves and trash from the cracks of the temple walkway, flashing a smile that shows off teeth stained black from chewing betel nut.

6.   The stone ruins, untouched by the flames, were stained black by the smoke that billowed from the fires.