The document summarizes and analyzes the cover art of several heavy metal albums. It notes that most covers use dark color palettes, limited ranges of blacks, grays, browns and reds. They often depict confrontational, threatening or violent imagery like blood, agony or religious symbols to match the stereotypical dark and heavy music expected by fans of the genre. While some include images of the bands, most hide behind symbolic imagery that conveys the intended dark themes and attracts the target audience of metal fans.