The fox in the coloring page is a mischievous one, with its sly expression and bright red coat with a white fur collar. It stands upright, holding a book in front of it. To bring out the fox's playfulness and intelligence, I would lighten its coat and add a few darker details such as buttons on its sleeves and stripes or spots on its back. In the book, I would add a few lighter colors to create an eye-catching contrast. To really bring the fox to life, I suggest using yellow and brown for its eyes and adding texture and pattern to its fur. To make the colors pop even more, try adding a bright blue background with interesting details like shapes and lines. This way, your fox will look like it's just hopped off the pages of a storybook.