Ключевые слова: abstract, architecture, background, blue, boundary, build, construction, corrugated, design, exterior, fence, gray, grey, grunge, hard, heavy, industrial, industry, line, metal, metallic, modern, panel, pattern, plate, protect, reflect, rippled, sheet, shine, silver, site, sky, steel, striped, surface, texture, textured, wall, wallpaper, white, zinc,