Ключевые слова: abstract, backdrop, background, black, blank, board, border, crane, danger, design, diagonal, frame, gray, grunge, hazard, heavy, horizontal, industrial, iron, layout, lines, metallic, old, panel, pattern, plaque, plate, screw, sheet, signboard, silver, stainless, steel, striped, stripes, template, texture, under construction, wall, yellow,