abstract architectural background barrier basic coloring colors colouring colours constructed exterior external firm fitted large light lines patchwork perspectives rock-wall rocks rough rugged secure security shaped shapes solid stone stones stonework strength strong style sunlight sunshine surface surfaces texture textures uneven variations various wall wallpaper well-built bumps close-up contrast cracked cracks curled curling curls dark dry edge edges gnarled gray grey grooves knobbly layers mottled ridges shade shadows surfaced textured tree tree-trunk trunk wood wrinkled wrinkles wrinkly appearance autumn autumn-colors autumn-colours autumnal brittle brown color colored colorful colour coloured colourful contrasts death deciduous dying exotic fall golden leaf maroon nature orange red russet rust rusty seasons veins yellow yellowish backdrop beam building construction copy design desk floor furniture grain graphic groove hardwood illustration industry knot knotted mahogany maple material medium merchant natural oak panel pattern pine plank polish redwood space stain stripe timber vector walnut wooden Australian bare bark contours cream Melaleuca paper-like paperbark paperbark-tree patterns peel peeling shedding soft strips