> The fad of using blue LEDs for power indicators only makes this problem worse. The human eye features special receptors sensitive to blue light that are not only used for vision.These cells are also used to detect the blue light from the sky, coordinating our internal Circadian rhythms to the Earth’s day/night cycle. Exposure to artificial blue light can interfere with this system, with research suggesting it may have a negative effect on sleep cycles.

This is always repeated but I seriously doubt it’s ever actually relevant in practice. Like does anyone actually suffer from a sleep disorder that magically goes away when the evil blue LEDs on their devices are switched out for red ones?