From "Dodgers to wear throwbacks for six games" by Ken Gurnick at Dodgers.com:
Though the original uniform worn in the 1940s was made of a reflective satin to make it more visible under the lights for night games, the throwback jerseys will maintain a similar feel as those worn by the Dodgers throughout the 2011 season.
Translation: Your dream of seeing Vicente Padilla wearing reflective satin just went down the drain. Sorry!
1&2: @LADDesignGuy; 3&4: Dodgers