Change color temperature of GNOME Night Light feature (introduced in 3.24). To increase temperature use +, d or right arrow. To decrease use -, a or left arrow. Save with s, reset to default value using r, reset to last value with l.
Quick way: launch app with new value as argument
gnome-night-light-adjuster 4000
You can manually compile the source code (C++) or download the executable:
#Download the binary
wget https://github.com/mirko-laruina/gnome-night-light-adjuster/blob/master/gnome-night-light-adjuster\?raw=true -O gnome-night-light-adjuster
#Make it executable
chmod +x gnome-night-light-adjuster
#Move in /usr/bin in order to use it globally (superuser might be needed)
mv gnome-night-light-adjuster /usr/bin/
ncurses is required for gnome-night-light-adjuster to work.