To color this Outer Space - Moonwalker scene, imagine a star-filled night sky, then highlight the human figure in white. For the blue helmet, choose a dark blue hue to create a sense of depth in the space. For the backpack, focus on giving it a metallic grey hue to make it pop against the black background. For the crater, use a variety of light beige and brown shades to make it more realistic. Pull everything together by using subtle highlights of lighter grey and white in different parts of the image. This will create an incredible 3D effect and make the figure stand out.