Select a vehicle from the 8 available to start coloring. Employ the color palette to color each part of the vehicle. Press on a color, then tap on the vehicle area you wish to color. Change between colors as needed to design your unique vehicle. Zoom in for detailed coloring by spreading the screen or using the mouse wheel. Store your creation by clicking the camera icon on the right. Repeat the process to color all 8 vehicles and complete the game. Test with different color combinations to design each vehicle stand out.