Why should it save energy
obviously if your screen shows darker objects it consumes less energy
. That's why many people use darker desktop images. To save energy. But if even your windows & window backgrouns & everithing is darker, that more energy you save!
I can tell you, that my laptop battery last about 1/4 longer when using darker themes like obsidian coast... Or I'm just the victim of some serious self-deception...
Anyway, if there is no exception list for color themes, then there really should be in the next versions of Pardus, cuz I think that a lots of people use darker themes, and it must be annoying for them too... In fact firefox has an option about whether or not to enable system colors... there should be something like that in LibreOffice, too.