Ключевые слова: abstract, alloy, aluminum, backdrop, background, black, board, circle, construction, dark, design, dirty, durable, format, framework, gray, grunge, hard, heavy, industrial, industry, iron, layout, line, macro, material, mesh, metal, metallic, old, page, panel, pattern, plate, rampart, rough, scratch, sheet, shine, shiny, silver, space, stainless, steel, strong, surface, texture, textured, wallpaper,