This sleek and muscular Hummer makes an awesome coloring page! The SUV has a boxy shape and a wide grille, with small circular headlights and large, square taillights. There are treads on the sides of the car and a flat roof with four doors. To bring out the bold design elements, try using bright colors for the body, and a darker shade for the tires, headlights and taillights. For a subtle touch, you could add some highlights of a metallic color on the contours of the car. On the flat roof, you could use shades of tan or brown to create a sand-like texture. For the interior, you could use a variety of colors and patterns to add a sense of depth.