/usr/share/applications/redshift-gtk.desktop is in redshift-gtk 1.10-5ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 | [Desktop Entry]
Version=1.0
Name=Redshift
GenericName=Color temperature adjustment
Comment=Color temperature adjustment tool
Exec=redshift-gtk
Icon=redshift
Terminal=false
Type=Application
Categories=Utility;
StartupNotify=true
|