art artist baby chalk child circles color colorful colour colourful drawing pavement rainbow sidewalk toddler young abstract artwork background blended blending colored colors coloured colours contrast contrasting dark decoration decorative distinctive interconnected light merge merging modern-art paint painting patterns perspectives raised shape shaped shapes splashes style surface surfaced surfaces surfacing texture textured textures thick thin trailing trails vibrant wallpaper Aboriginal-art-colors Aboriginal-art-colours adopted-in-1978 Australia black coloring colouring crease creased creases desert-rose emblem emblematic fabric features flag floral-emblem folds gossypium-sturtianum material Northern-Territory ochre official Patriotic patriotism self-government seven-petals sign Southern-Cross stars Sturt’s-desert-rose stylised symbol textile white ba1969 experiment fun grunge test torn fish pencil pencils brush canvas spatter splat strokes