[Unit]
Description=Inverting eInk contrast

[Service]
#WorkingDirectory=/var/home/%u/.spool
ExecStart=/var/home/%u/.local/bin/wl-gammactl -c -1.000 -b 2.000 -g 0.500 -m DP-1
Restart=always
TimeoutSec=5

[Install]
WantedBy=graphical.target