abstract background black bright bushfire color coloration colored colorful colors colour coloured colourful colours dark fiery fiery-sky fire firs-storm glowing golden intense intensity light skies sky smoke smoke-puffs spreading streaky textures thin vaporish vapourish variations wallpaper warm wildfire wispy appearance Australian close-up contours cracks edges exposed gnarled gray grey layers lines Melaleuca mottled open paperbark paperbark-tree Roots shapes smooth soft surface surfaced surfaces swirls texture textured tree tree-roots twisted twisting uneven wood angle angles architectural architecture barrier basic brick brick-wall bricks brickwork exterior external perspective perspectives rough solid standard strength variation varied various wall wooden woodwork bare bark brown cracked dry edge eucalypt eucalypts grooves peeling self-shedding shadows shedding sunlight tree trunk trunk