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Re:f.lux has been updated to a new version by thirdsun on Wednesday October 16, 2013 @11:10AM (#6560067)
I have to say that I prefer the warmer color tones regardless of daytime and lighting, which is why I have f.lux always set to 5000K - unless I need accurate colors - and even warmer during the dark hours.

Otherwise and without f.lux I tend to get occasional headaches and my eyes fatigue after long days spent at the computer.

Re:f.lux has been updated to a new version by mixmastamyk on Wednesday October 16, 2013 @01:01PM (#6560761)
If you always want it set, most monitors have these same controls and will save memory. Mine even has presets so I just hit the button a few times.
Re:f.lux has been updated to a new version by derefr on Wednesday October 16, 2013 @05:07PM (#6562167)
There's also the OS's color-calibration/color-profile generation utility, which will usually let you set both gamma and temperature however you like them.