Two little girls are smiling and holding a rainbow stick

Create a colorful and vibrant thumbnail image for the educational kids' story "The Rainbow's Secret Colors." Feature a bright rainbow in the background, with each color of the rainbow shining brightly. In the foreground, include an image of a little girl named Lucy, smiling and laughing with joy. Surround her with playful elements such as butterflies, birds, and blooming flowers to represent the laughter of children, songs of birds, and blooming flowers that contribute to the colors of the rainbow. Use bold and cheerful colors to make the image eye-catching and appealing to kids. Add the title "The Rainbow's Secret Colors" in a playful and whimsical font at the top of the thumbnail.

(low quality:1.4), (worst quality:1.4), (monochrome:0.85), plants, trees, flowers,