angles anticorrosive appearance bolt bolts circular exterior external galvanised metallic paint post power-post protective round silver silver-frost silver-frosting spray-paint texture textured textures abstract backdrop background decoration decorative desktop diagonal pastel structure structures wallpaper colorful coloured crumpled fabric faded grunge guished pattern tulle wrinkled beam cracked cracks knot old rugged weathered wood wood texture wooden knot Australian bare bark brown colors colours coppery eucalypt mottled smooth sunlight surface tree tree-trunk trunk upright variations modern ovals shapes swirl blue clrean color colored colour grain grained painted panel wood-grain wooden appearances Camouflage camouflage-netting cover defence defending display emplacement open-air remnant surfaces thick thin war world-war better-grip coloring colouring covered covering designed distinctive drainage drive driveway grip patterned patterns surfacing waffle-pattern city crack decay grungy urban wall