beam cracked cracks knot old rugged texture weathered wood wood texture wooden knot abstract appearance Australian background bare bark brown colors colours coppery eucalypt mottled smooth sunlight surface textured textures tree tree-trunk trunk upright variations wallpaper backdrop decoration decorative desktop modern ovals pastel structure structures shapes swirl blue clrean color colored colour coloured grain grained paint painted panel wood-grain wooden angles 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 grunge grungy urban wall dead drought grass hay plant seco st.augustine trampled collect collection hobby letter mail post stamp stamps