Charles has a Philips Hue lighting system that randomly turns blue. Leo says that when the power goes out, the Hues come on at full brightness when it returns. So it could be a bug like that. Leo advises contacting support through the website. Meanwhile, if Charles can just reset it to the normal color, then at least that is good. The chatroom also says to make sure the bulb has the latest firmware, and he should check his alarm settings.