abstract appearance backgrounds bare bumps close-up colors colours cracks edge edges grain hard-wood layers lumber patterns ridges rough shades-of-colour smooth surface surfaces texture textured textures timber tree tree-trunk trunk uneven variations varieties wallpaper wood wood-grain aged angles arm-rests armchair back-rest background brown chair connected furnishings furniture grained hard hardwood indoors joined lines old rural rustic seat seating singular smoothed strengthened strong surfacing wood-grains wood-varieties wooden woodwork bark dry gray grey grooves patterned perspectives shape shaped shapes strange surfaced twisted twisting unusual art artwork cracked dark dead-wood gnarled painted painting shadows wrinkled wrinkles wrinkly shades of colour strips tree trunk