abstract architectural background barrier basic brick-wall brickwork cement colored colorful colors coloured colourful colours construction contrast cutouts decorated decorations exterior external firm gray grey linear lines mortar perspective perspectives rough secure security solid strength strong style surface surfaced surfaces texture textured textures variation varied various wall walled wallpaper well-built backdrop brick bricks builders building coloring colouring concrete constructed construction-work holes hollow rectangular standard uneven 3D blue coarse decay decorative design detail grainy graphic green grunge light material metallic orange pastel plaster purple red rock scrapbooking stone urban appearance architecture color colour smooth traditional-brick-wall angles covered covering dark edges edging elements height high patterned patterns protection protective roof roof-area roof-tiles roofing rooftop rows shade shadows shapes sunlight sunshine terracotta tiled tiles tiling variations wavy