This whimsical pastel-colored unicorn is so cute! It has a heart-shaped Cutie Mark, a smiling face, and a beautiful rainbow mane and tail that seem to just float in the air. It's standing atop a fluffy white cloud, and the area around it is filled with sparkles and stars. To truly make this unicorn stand out, I would try to pick colors for their mane and tail that will pop against the pastel backdrop. Dab in some yellow and greens for the mane and tail or pick an eye-catching neon pink or hot pink for a loud, playful look. Finish off by adding some rainbow details in the background, like a sun or a rainbow, and the coloring page will be all ready to be proudly displayed!