Faulty LED streetlights have been turning purple ... After all, streetlights are supposed to help you see when it gets dark outside. The purple lights aren't particularly good at that.

It has led to a years-long wave of purple lights that mysteriously appear ... suggested the streetlamp are emitting ultraviolet or black light, that's incorrect, Davis said.

If you've been seeing purple porchlights around Upstate New York there's a reason for it and it might surprise you.