application: honor 'color-scheme' setting
The color-scheme setting is the new system-wide dark preference introduced in GNOME 42. Set the dark theme based on this setting if it's not overridden by gnome-panel's own theme-variant setting.
The color-scheme setting is the new system-wide dark preference introduced in GNOME 42. Set the dark theme based on this setting if it's not overridden by gnome-panel's own theme-variant setting.