This document summarizes and analyzes the album covers of four rock bands - Green Day, Metallica, My Chemical Romance, and Slipknot. It notes that Green Day and Metallica use consistent color palettes of red, black, and white across their albums. For Green Day, the color red symbolizes themes of love, anger, or blood. Metallica's albums feature sharp, pointed typography reflecting their electric genre. My Chemical Romance also uses red and black but in more diluted tones. Their album covers have varying art styles. Slipknot is the only band that features photos of the whole band on their albums, though their identities are still hidden behind masks.