I can imagine that the LCD panel itself (or its controller (or a even the graphics card)) reduces the color depth which is usually not that visible but becomes more prominent with dim colors. Therefore, Duncan Lithgow might even consider the screenshot to be ugly when displayed on his LCD.
-- Logging out on a LCD produces a fade effect that is not pleasant https://launchpad.net/bugs/12389 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs