1.   My blood dripped on the ring floor and turned instantly black, merging with the modern art collage of other stains.

2.   Spitzer produces his drawings in a darkroom by applying a titanium mixture on to parchment, which gradually turns black in daylight.

3.   Young elder tree and ash tree leaves can also turn black sometimes once they have been pressed.

4.   The original white lead pigments have oxidized and turned black.

5.   The bark of affected trees turns black and shrivels, and trunks and branches are covered with stains and lesions.

6.   An omen that things will be worse than usual for Siegfried comes in Act III, when he gives the imposter Odile white roses that turn black.

7.   And her shingles started to turn black.

8.   As a warning, Gore waved in front of him a rubbery replica of a human lung turned black from cigarettes.

9.   At midday, the skies turned black over the Sundance subdivision, about six miles southeast of Bend in central Oregon.

10.   Black peppercorns are picked when the berries are almost ripe, then dried until the outer skin turns black.