[kqr2]

This reminds me of Blackle : the black front end to Google Custom Search which claims to save energy when using CRT monitors.

http://blackle.com/

http://en.wikipedia.org/wiki/Blackle

[artmageddon]

I remember these findings being refuted, and I thought it was because it took the same amount of power for an LCD screen to show a black pixel instead of a white pixel.

I will say, given these findings from OP, I hope these types of displays become more common.

[keenerd]

It takes more energy for an LCD to show a black pixel. It is not much compared to the backlight, though. On one of my laptops solid black uses 0.5 watts more than solid white.