BTW, if you happen to have an OLED device, when you display a black image on your display, other than the electronics that run to render the image, it's equival

BTW, if you happen to have an OLED device, when you display a black image on your display, other than the electronics that run to render the image, it's equivalent to actually having the screen functionally off. Unlike an LCD display where dark versus white pixels use approximately the same power, on an OLED display black pixels use no power.