Adjust screen brightness automatically at night
Some days spending a whole day in front of the monitor may be more strenuous on the eyes than desirable. In order to mitigate the problem I have done several things such as reducing the brightness of the monitor and using paler and darker colors where possible (such as non-white background for web pages).
That helps, but once I noticed that the "6.5K" color scheme (sometimes labeled "reading" in monitor settings) works even better than dark backgrounds and reduced brightness.
I was wondering if there is anything I can use to auto-adjust the temperature of the colors without going through the awkward monitor menu.
Both Windows and nix* specific answers are welcome.