This free and unique collection seems to be tailor-made for car fanatics (read boys). The printable pages feature sleek and suave models, some of which are fictional with eyes on a mechanical-looking face. Police cars and ambulances should be colored with a sound knowledge of the permissible color code. Otherwise, you can go on a rampage with your reds, browns, silvers and grays. The headlights can be given a yellow tint. The wheels would look racy in blacks and browns. One of the automobiles has a door slid up displaying the cozy seats inside. Color them in a shade contrasting the metal body to attract the viewers. It is important to emphasize the polished surface of the exteriors while coloring. Merge in white linear patches cleverly in the body to depict the gloss. A race car adds diversity to the collection with its flat, ground-hugging form. Experiment with whacky color combinations to highlight the icons of speed and swag.