I think you might be overstating the strength of the association. Around me now I have 3 power buttons with white light [0], and 2 with blue light [1]. The colo

I think you might be overstating the strength of the association. Around me now I have 3 power buttons with white light [0], and 2 with blue light [1]. The color isn't very important because the power symbol makes the purpose of the button obvious. [0]: a Dell tower PC, a MBP with power button on the keyboard that is backlit like any other key, and a Dell monitor [1]: two other models of Dell monitor