Overlay for link destination should be opaque: Closes #6847
Overlay for link destination should be opaque: Closes #6847

The Gtk.Overlay's background color is set to the background color
of the main window when it's realized and when the window's
style changes.

emersion/geary,tshikaboom/geary,emersion/geary,AtticHacker/geary,mjog/geary,mpdeimos/geary,kpiwko/geary,mjog/geary,glebihan/geary,githubnemo/geary,aatishnn/geary,jimbonator/geary,MohamedIM/geary-unofficial,emersion/geary,rschroll/geary,aatishnn/geary,glebihan/geary,robol/geary,rschroll/geary,glebihan/geary,jimbonator/geary,geekvigilante/geary,robol/geary,martinra/geary,tshikaboom/geary,aatishnn/geary,robol/geary,githubnemo/geary,martinra/geary,AtticHacker/geary,jimbonator/geary,martinra/geary,abn/geary,githubnemo/geary,AtticHacker/geary,mjog/geary,tshikaboom/geary