Create a mesmerizing illustration where the entire expanse of the sky transforms into the colors of the rainbow. Picture a scene where a boy or girl gazes up at this breathtaking display of a sky painted in all seven hues of the rainbow. The vibrant colors should envelop the entire sky, creating a surreal and enchanting atmosphere. Enhance the nostalgic feel by incorporating subtle details that evoke a sense of timeless beauty. The overall composition should transport viewers to a dreamlike world where the celestial canvas is a radiant spectrum of nostalgia and fantasy.

verybadimagenegative_v1.3, ng_deepnegative_v1_75t, (ugly face:0.8),cross-eyed,sketches, (worst quality:2), (low quality:2), (normal quality:2), lowres, normal quality, ((monochrome)), ((grayscale)), skin spots, acnes, skin blemishes, bad anatomy, DeepNegative, facing away, tilted head, {Multiple people}, lowres, bad anatomy, bad hands, text, error, missing fingers, extra digit, fewer digits, cropped, worstquality, low quality, normal quality, jpegartifacts, signature, watermark, username, blurry, bad feet, cropped, poorly drawn hands, poorly drawn face, mutation, deformed, worst quality, low quality, normal quality, jpeg artifacts, signature, watermark, extra fingers, fewer digits, extra limbs, extra arms,extra legs, malformed limbs, fused fingers, too many fingers, long neck, cross-eyed,mutated hands, polar lowres, bad body, bad proportions, gross proportions, text, error, missing fingers, missing arms, missing legs, extra digit, extra arms, extra leg, extra foot, ((repeating hair))