Ключевые слова: accident, alarm, alert, attention, background, banner, beware, black, careful, caution, construction, danger, dangerous, dirty, exclamation, failure, grunge, hazard, hazardous, importance, important, industrial, industry, information, label, mark, message, notice, old, orange, point, precaution, prevention, red, risk, road, rusty, safety, security, sign, stop, symbol, text, texture, textured, urban, vintage, warn, warning, yellow,