abstract art background color colour fun paper texture colors dishcloth paint painter textile appearance bundle hollow plastics pliable smooth soft surface surfaces synthetics tactile textured textures thick thin tubes tubular white backdrop colorful colourful colours red stripes structure structures vertical wall wallpaper backlit black circles grid light metal metallic plate regular round shape shapes solid steel yellow blinds brown horizontal lamellae old painted pastel used weathered wood wooden worn colored coloured exterior external gray grey rough uneven forest hill mountain tree trees woods