basement window grate grating grid gridiron trellis window above angled angles appearances architectural architecture chinese coloring colors colouring colours exterior exterior-shutters external functional height high louver-blades louvered louvers louvre-blades louvred louvres painted plantation-shutters protection shape shaped shapes shelter shuttered shutters style surface surfaces symmetrical symmetry traditional wall window-covering window-frame window-shutters windows minimalist modern background closed house white red blue maroco pane shutter animal animals cat cats city street ancient antique old apartment architecure building tenement Edinburgh flat modern styles yellow windows