Gnome 3 now has it built in and it's really easy to configure - there's an on and off button in the screen configuration. https://www.gnome.org/news/2017/03/gn

Gnome 3 now has it built in and it's really easy to configure - there's an on and off button in the screen configuration. https://www.gnome.org/news/2017/03/gnome-3-24-released/attachment/night-light/ https://www.gnome.org/news/2017/03/gnome-3-24-released/attac...