My monitor has a glowing ice-blue power button.
My center computer speaker console has a blue led. I suspect that they accidentally mounted a blue laser pointer instead, and glued a piece of green paper over the led to give it a more bearable color and level of brightness.
(Seriously, what's the point of colored leds all over the place? I'd sooner pay extra to not have my computer beam colored light in my peripheral vision all day long... Especially with lighted fans, where you get the nice added flickering thrown in for free.)