They start out green and relatively soft, but quickly turn brown and hard.

Soon after, it will turn dark brown, then black and bitter.

Even the back of his belt was soaking, and had turned a much darker brown than the rest.

This medication may cause your urine to turn dark yellow or brown in color.

Finally the leaves are dried with hot air until they turn brown or black.

The leaves are green when new and turn orange and brown in the fall.

Later the galls turn brown or black and remain on the tree for a long time (until the next season).

Sometimes the upper surface of the tongue turns black or brown in color.

The skin turns brown and dry when left out after harvesting.