chinese colorful coloring colors colourful colouring colours exterior exterior shutters functional louver blades louvered louvers louvre blades louvred louvres painted plantation shutters protection shelter shuttered shutters traditional window window covering window frame window shutters windows angles arched arched window arches architecture beams brown cream interior roof structure structures Tan textures wood wooden wooden window shutters balconies balcony balustrade decorated decorations decorative railing sheltered