Do you like beautiful and colorful colorings? If so, then this simple and very cute rainbow coloring page may be interesting for you!
So, the rainbow has strictly defined colors, which are presented in the image below. You can add them to the picture without smooth transitions, as the artists of Coloringpagez.com did, and make very smooth transitions between colors.
The clouds, as you see in the image below, should be painted in light blue. In addition to colors, you can also add some shadows to make the result more voluminous.