abstract angles architectural backdrop background barrier black colored coloring colors coloured colouring colours concrete constructed exterior external firm green linear lines modern mortar patterned patterns perspective perspectives secure security smooth solid standard strength strong style surface surfaced surfaces texture textured textures variation varied various wall walled wallpaper well-built 3D art blue color colourful dazzling decoration embossed fantasy fill futuristic geometric graphic grunge kaleidoscope metallic mosaic pattern psychedelic purple rainbow red scrapbooking shape technology unique vibrant vivid yellow architecture beige broken building cement construction damaged decay design detail dirty grungy high resolution industrial old paint plaster retro rough rusty stone structure urban vintage weathered white appearance chips close-up colour conglomerate crack dividing-line drive driveway gray grey groove growth life line macro mixed mixture moss moss-covered moss-growth plants rocky sprouting straight