I think this Glaceon coloring page would look beautiful with a variety of colors to bring out its bright blue fur, light blue ruff, and light blue stripe. The ears and tail could be colored a light pink or purple, and the nose a darker shade of blue to contrast the body. You could shade in the tufts of fur around its cheeks a soft yellow, and give the paw pads a light orange color. To add in a bit more detail, you could color in the eyes and make them a deep blue, and add a hint of a darker blue on the tips of its tails. Overall, this would be a stunningly vibrant page to color in!