As suggested by Dylan, this should be done in the theme. Note however that light-themes now support the "linked" GTK style class (used here and also in the gtk file open dialog), so this could be considered less critical.
As suggested by Dylan, this should be done in the theme. Note however that light-themes now support the "linked" GTK style class (used here and also in the gtk file open dialog), so this could be considered less critical.