Every morning, Charlie would race to the window, eyes wide with wonder, to gaze at the clouds drifting lazily across the sky. He loved how they floated, soft and fluffy, like cotton candy puffs. But no matter how much he watched, they were always the same shades of white and grey.

One sunny afternoon, something magical happened. As Charlie lay on the grass, staring up at the sky, he spotted a cloud that was unlike any he had ever seen before. This cloud wasn't just white - it shimmered with all the colors of the rainbow, swirling and changing as it floated by.