This is a delightful coloring page featuring a giant smiling unicorn with a vibrant rainbow mane and tail. Its magical white coat is filled with small stars and hearts. You can make this scene even more magical by adding various colors to all of the elements. Consider adding bright pinks, purples, and shades of iridescent blue to the unicorn, and filling in the stars and hearts with pastel pinks and blues. The rainbow mane and tail could be filled in with the full spectrum, from fuchsia through to mint. But you can also have fun experimenting with different combinations and mix and match the colors as much as you like!