Dotfiles/.config/systemd/user/redshift.service

[Unit]
Description=Redshift display colour temperature adjustment
Documentation=http://jonls.dk/redshift/
After=display-manager.service

[Service]
ExecStart=/usr/bin/redshift -b 1:0.8 -t 6500K:2000K
Restart=always

[Install]
WantedBy=default.target