Rainbow coloring

Rainbow coloring is when you use all the colors of the rainbow in order, like red, orange, yellow, green, blue, indigo, and violet. When you see a rainbow in the sky, it seems like the colors blend into each other, but you can separate them by looking closely. When you draw something and color it with rainbow colors, it can make it look very bright and happy! It's like having a piece of the rainbow right in your picture!