abstract appearance Australian background bare bark brown colors colours cracked cracks dry edge edges eucalypt eucalypts gray grey grooves layers lines mottled peeling rough self-shedding shadows shapes shedding smooth sunlight surface texture textured textures tree tree trunk trunk uneven variations wallpaper wood angles architecture buildings chimney stacks chimneys contrast contrasting corrugated corrugated iron exterior external heights high historic metal mixed modern old patterns perspectives renewed roofing roofs rooftops rooves rows shadow shape style styles suburban sunshine surfaces artistic artistry blended color coloration colored colorful colour coloured colourful curved curves decoration decorative distinctive light outlines patterned round rounded shaped surfacing thick thin vibrant yellow