Disney/Pixar Cars, Color Changer, Doc Hudson [Blue to Black] Vehicle Create your own custom paint job with your favorite character from Disney/Pixar Cars! 1:55th scale vehicle changes colors to black when dipped in cold and to blue in warm water Splash, dip, and dunk your way to a whole new look! Look for other color change cars (sold separately) to expand your fleet Collect all your favorite Cars characters!