The CN Tower in Toronto has a light show every night except during bird migration. There is an intelligent LED system that is energy and cost efficient installed in the elevator shaft. They have a list of the lightning schedule and the ability to request light shows to raise awareness for specific causes.The coolest part is that the random flashes of color aren’t actually random. It represents a 2 pixel wide vertical line of a picture. So when you put the lines together you get a picture. It wasn’t suppose to be a real-life Easter egg, just an easy way to get a color scheme.https://youtu.be/rqFMbXMfS9Q