arch banners color colored colors colour coloured colours decorated decorations decorative display distinct distinctive Flags flow four-storeys-high gardens government Istana-Park National-Day nationalism park Patriotic patriotism pools pride reflecting-pools reflections Singapore water blossom blue buttercup colorful flower grass green iris mountains nature plant purple spring summer wetland yellow atmospheric backdrop beach colourful desktop dune idyllic sky wallpaper abstract bleach hut paint painted plank planks summer day sun sunny urban washed out wood wooden botanical-garden clipped cut edges flowering-plants flowers foliage garden gardening gold greenery groundcover growth hedges layers leaves levels plants rows shrubbery shrubs slope sloping trimmed vegetation