Reference Image. Brick wall painted in a gradient rainbow pattern, featuring red, orange, yellow, green, blue, and purple colors. The surface is wet with water droplets, enhancing the vividness of the colors. The bricks are arranged in a classic running bond pattern, giving a textured appearance. Each brick's rough texture is accentuated by the water, creating a glossy effect. The image captures a close-up view, highlighting the color transitions and moisture.