Blood had dried on the shirt in nearly black stains.
Water leaves black stains, moss shows green, a little grass springs up in the cracks.
There were black stains at the knees and down the legs.
He had acquired nothing but a few black stains on his clothes for all his effort.
What," he asked, "are these black stains all over the place?
There were dark stains on the sheets, nearly black.
If someone comes in here while we're away and opens a desk drawer, he will get black stains on his hands.
It didn't take much imagination to figure out what the black stains around the end were.
Then he realized that the black stains were dried blood.
There were ugly black stains running down the sides of the stone.