1.   And sure enough, there was Thomas in the reading corner, soundlessly turning blue and clutching at his throat.

2.   They called an ambulance when Clare became unconscious and her lips turned blue, but by then it was too late.

3.   Infected adults develop a cough and their skin and ears turn blue.

4.   Christopher Ray began to choke and turn blue after the candy-coated ball lodged in his voice box.

5.   But the court heard that after the defendant had been left alone on the ward with Katie for about ten minutes, she had turned blue and stopped breathing.

6.   Christopher had turned blue as if he had been short of oxygen.

7.   The corpse, now stiff, had turned blue with the cold.

8.   And every so often the screen turns blue for no apparent reason other than to evoke an artiness that seems entirely spurious.