abstract architectural backdrop background barrier brick brick-wall bricks brickwork cement coloring colors colouring colours constructed exterior external firm linear lines mortar perspective perspectives rectangular 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 alcove angles corner dirty grime weathered corner-wall fixed merger merging mixed repaired art artistic artwork black-string blended bright color colored colorful colour coloured colourful contour contoured contours decorative design details enclosed fine geometric geometrical interconnected interlaced intermeshed interwoven light looped loops multicolored multicoloured patterned patterns shape shaped shapes string vibrant basic windows