31.   When they turn a gray, ashen color, you are ready to test the temperature.

32.   When the butter turns a rich caramel color, remove from the heat.

33.   When the leaves turn color, sports fans anticipate a favorite seasonal ritual, Monday Night Football on ABC.

34.   Clean rivers have turned the color of tea with milk.

35.   Researchers looked at records for such events as the appearance of leaves or needles, blossoming, and leaves turning color and falling.