This panda looks like he's having a great time! His black fur with white spots contrast beautifully with his white belly. I would recommend coloring the red shirt with white buttons in a bright primary red color, and the same with the shoes and laces. You could make the tree bright green or add a hint of yellow to give it some extra dimension. For the sky, try a light blue color with white highlights on the clouds. You'll be left with a playful and vibrant coloring page that will be sure to bring a smile to anyone's face!