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 art artwork cracked dark dead-wood gnarled grooves painted painting patterned perspectives shadows shape shaped shapes surfaced twisted wrinkled wrinkles wrinkly bark shades of colour strips tree trunk dry gray grey shade