What a beautiful scene! The sky above is filled with colorful balloons of all shapes and sizes. Bright red, bold yellow, and vibrant blue balloons dance in the air in a cheerful display of fun. Some are clustered together while others are floating at different distances away. A perfect image to create with bright, vibrant colors! I would start by coloring the sky in a light, pastel blue. I would then choose some pinks or purples for the red balloons and a light orange for the yellow balloons. Finally, for the blue ones, I'd pick a royal blue. To give some extra detail, I might use some lighter blues, yellows, and oranges to show the different shapes and sizes, then finish off with some bolder highlights of blues and yellows to really make them stand out. With a little bit of imagination, this cheerful scene will come alive!