abstract angled angles appearance ball colored colorful coloring colors coloured colourful colouring colours common Dirt dirty face fading popular recognisable recognizable round rubber-ball smile smiley-face symbol symbolic toy variations variety wearing-out well-known worn yellow Australia background blue-sky cloud clouds conditions feathery fine formations light movement patterns shapes skies sky southern spread spreading streaky sun textures thin vaporish vapourish various-cloud-formations warm weather white wispy brick bricks building-blocks cave-like caves close-up cracks cream firm grains grainy grit holes holey ingredients perspectives rough selected selection singles solid strength strong surface surfaces texture walls Australian bare bark branches brown contours edges gnarled layers lines Melaleuca mottled paperbark paperbark tree shadows shedding soft sunlight textured tree tree trunk trunk uneven wallpaper wood