How does the color yellow progress throughout the novel red badge of courage?

In "The Red Badge of Courage," yellow symbolizes aspects of fear and cowardice. At the beginning of the novel, yellow is associated with the protagonist, Henry Fleming, as he struggles with his fears on the battlefield. However, as the story progresses, Henry's character evolves, and the color yellow begins to represent growth, courage, and redemption as he faces his fears and gains confidence.