I would color the page using bright and vibrant colors. For the title and menu options, I would use bold, bright colors such as yellow, orange, and green and a bold black font. For the tutorial descriptions, I would use a softer pastel palette, such as light blues and pinks. For the coloring page images, I would use more bold colors and mix in some metallic shades such as silver and gold for a more magical feel. I would also highlight the spell being performed with a bright color, such as blue for the Freezing Charm. Overall, I would aim to make the page vibrant and eye-catching.