"A vibrant stack of books, each with a bold and unique color

"A vibrant stack of books, each with a bold and unique color, arranged in a slightly uneven, playful pile. The covers feature solid shades of bright red, deep blue, lime green, and neon yellow, with glossy finishes that catch the light. The spines are simple yet elegant, with minimalist designs or small metallic details. The entire stack is isolated on a transparent background, allowing the vivid colors and glossy textures to be the focal point, radiating energy and creativity."