abstract appearance arid Australia Australian blue brown bush central central-Australia coloring colors colouring colours contrast contrasting descriptive desert-country desert-region distance distant drought dry dry-brown-land far foliage gravel ground hot inland light outback outcrops perspective perspectives rocks rocky rough rugged scrub shrubbery sky sunlight sunshine terrain textures trees vegetation appearances Cacti cactus clumps clusters colorful colourful display edge edges flora frilled frills garden-display garden-plants green greenery irregular leaves ornamental perennials plants pointed protection ribbed ribbing ribs shape shapes sharp short-spikes small-spines spikes spines spiny succulents surface surfaces unusual variations variety architectural architecture backdrop background barrier basic brick brick-wall bricks brickwork color colored colour coloured constructed exterior external linear lines mortar secure security smooth solid standard strength strong style surfaced texture textured traditional-brick-wall variation varied various wall walled wallpaper well-built balcony cement Rendered windows firm corner rectangular clean