If you have been driving past dark you may have noticed some area streetlights that are appearing to cast a purple light. The reasoning behind the light shining a purple tint is caused by a defect in approximately 1% of WPS streetlights. Streetlight LED bulbs can produce a variety of colors, but normally appear to cast a blue-ish light that the manufacturer then coats to make the light appear the bright white color that may come to mind when you think of LED lights. WPS says it does not create a safety issue and that the issue is happening as far south as Milwaukee as motorists noticed the purple lighting last year. Approximately 300-400 streetlights have turned purple which is less than 1% of the 50,000 lights within the WPS service area which includes Door County among other cities in Northeast Wisconsin and Fox Valley. 

(Photo courtesy of yourmileagemayvary.net)