blue light special

What is the deal with most things computer-related now having blue lights on them? And damned bright ones, at that? When I walk out in the living area of my apartment here in swanky Bougival, there's a blue glow - bright enough to get your groove on and see what your doing. No need for candles and such for mood lighting, nor a nightlight to prevent banged shins. I have four items with bright blue lights that contribute to this: small external hard drive, USB speakers, power brick, and a blue-tooth earpiece that charges at night. Then there's gently pulsing lights on the laptop as it sleeps, a white pulsar on the ADSL box, and an assortment of red LEDs, steady or not. Why does everything have to have a light? Or at least, such bright ones?