abstract art black design floral flourish flower graphics hi-res leaf plant swirl tree vector white white background Aboriginal-art-colors Aboriginal-art-colours adopted-in-1978 Australia color colored coloring colors colour coloured colouring colours crease creased creases desert-rose distinctive 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 appearance art glass craftsmanship glass images light patterns quality shapes stained glass texture textures windows