invert colors, saves battery?

Does inverting colors on a macbook pro save battery life? Is this because it takes less energy to display black then it does white?
would this apply to any laptop?

 

very doubtful

 

That myth is a stupid carryover from the CRT days. The pixels on LCD monitors barely use any energy at all. The great majority of energy is used by the backlight, which is always on, regardless of what color you're looking at.

 

There is this black search engine.

http://www.blackle.com/

 

Quite contrary to that in fact. I've read somewhere that it actually takes MORE energy to display black (dunno why) compared to white.

 

Energy should be about the same, 98%+ of the screen power draw is the backlight not the pixels. You can see significant change in battery life by dimming your screen. I doublt you would see any difference with a color change. The backlight is always on and at the same brightness no matter what the pixel color.

White will probably use all of the little individual color cells in the screen to produce white, and black I would assume has them all off, so at a scientific level I am sure there is some power saving there, but back to reality where the perceived change is what matters I do not think you could notice any difference.

 

Actually, in a TN panel (almost all LCDs), the presence of an electric field "straightens" the liquid crystal and displays black. The absence of the field displays white, so technically black is MORE power intensive, but again, completely insignificant compared to the backlight.