Rainbow is a meteorological phenomenon that appears as a multicolored circular arc in the sky. It is caused by reflection, refraction, and dispersion of light in water droplets, resulting in a spectrum of colors.

Rainbow coloring pages are a popular activity for children of all ages. These pages typically feature a large rainbow outline with each color segment labeled, allowing children to learn the order and names of the colors. Coloring the rainbow can also be a fun way for children to practice their fine motor skills, as they carefully fill in each segment with their chosen colors. Many rainbow coloring sheets also feature additional elements such as clouds, raindrops, and even animals, providing children with a creative outlet to express themselves and create their unique rainbow scenes. 

Some online websites like Coloringlib will provide a variety of designs for children to entertain and run wild.