abstract architectural backdrop background barrier basic brick brick-wall bricks brickwork cement colored coloring colors coloured colouring colours constructed exterior external firm linear lines mortar perspective perspectives secure security smooth solid standard strength strong style surface surfaced surfaces texture textured textures traditional-brick-wall variation varied various wall walled wallpaper well-built appearance conglomerate contours contrast contrasts cracks fissures flaws grit gritty layered layers levels light natural red reddish-brown rock rock-face rockface rocky rough rugged shade shadows shape shaped shapes stone strata stratum sunlight sunny sunshine veins above angle angled angles architecture blue bluish ceiling clouds color colour frame framed glass height high long metal metal-framework metal-work rectangles rectangular sky sky-light skylight skylight-windows structure support supporting visibility visible window window-frame windows art-glass artistic artistry bright coloration dark decorative design details distinctive edges geometric geometrical glassy interconnected interlinked patterned patterns stained-glass symmetrical symmetry thick thin vibrant yellow fitted large patchwork rock-wall rocks stones stonework uneven variations art blended brown circles cushioned decoration depth detailed folds foliage gray green greens grey image images intermeshed interwoven intricate intricate patterns kaleidoscopic patterns mandalas pink points pulsating radiating soft starbursts turnips white