So far, more than 20 states have a "purple paint law" in place, the Hudson Valley Post reported. Officials chose the color purple because ... chunks of concrete are spray-painted with purple ...

The color is also inclusive of people with ... and should be less than 100 feet apart. In the case of purple trees, only latex or spray paint may be used that is conspicuous while encircling ...

Before a purple mark that would be visible from both sides of a fence shared by different property owners or lessees may be ...