Steve,
What year MDO do you have, 67 or 68? I have a 68, but am also missing the reading lamp. Wayne Maddox, a parts supplier from Colorado, has a MDO, and he made a lamp for it, but I can't recall the materials he used. Wayne is listed by the IOC as a parts supplier, so you can get his phone number or addresses there.
I would like to hear more about your car, mine was from California, is charcoal gray with a black interior.
Bill/Imp, 68's