Optionally update your current coordinates every time you enable Redshift (e.g.Adjust the screen brightness and forced temperature via hotkeys.Pause the temperature adjustment for x minutes.Force a full nighttime temperature adjustment, no matter what the actual time is.Quickly enable/disable Redshift: double-click the tray icon.Control Redshift based on location or custom night/day times.
Redshift Tray is a no-frills GUI for the excellent screen temperature adjustment tool Redshift by Jon Lund Steffensen.