In the Guardians of the Galaxy - Groot and Rocket coloring page, a large, tall creature with strong features and a menacing expression stands proudly. The creature is dark in color and sporting large teeth and wicked red eyes. In its hand holds a much smaller, furry creature, with large pointed ears and appears to be quite scared. To color this page, shades of gray can be used to depict the larger creature. For the smaller Rocket, warm tones such as browns, yellows, and oranges would be fitting. The background can be done with light blues or greens, providing a vibrant contrasting backdrop to the scene. The details of Groot and Rocket can be accentuated with black pen strokes and some appropriate embellishments to bring out the beauty of this coloring page.