abstract appearance Australian bark bumps close-up colors colours cracks layers melaleuca rhaphiophylla melaleucas myrtaceae paper-like paperbark patterns peel peeling smooth strips surface surfaces texture textured textures tree tree trunk trunk uneven useful variations wood background color colored colour coloured cover covered covering curved curves grain grained mustard muted panel paneling panelling pattern patterned soft striped stripes surfaced wall wallpaper architectural architecture basic brick brick-wall bricks crack cracked exterior external rough solid standard strength variation varied various angles brown building contrast contrasting corrosion corrugated corrugations dark decay deterioration elements metal old perspectives rust rusty wearing weathering craked fence gloss glossy gray grey