Dave,
Excellent suggestion! I don't know why I did not think of that, especially since I used to use such tricks to soften camera flash! A littl piece of plastic milk jug might do the trick.
Of course, my "MUCH SIMPLER" solution was to buy some LEDs and a 2-AAA battery holder from Radio Shack and make my own light with a little wire and a piece of coat hanger. Let me tell you, it worked pretty well. I like it better than the factory version. I think I will pursue it to refine the attachment. I did not even put a switch, just male and female spade connectors that I had around. Plug in= ON. Unplug=OFF. Strictly the high-tech stuff for me! I just left the wire long, placed the battery holder in a zip lock bag and taped it to my stem. This is strictly a prototype, you understand. I will probably develop a sophisticated container for the batteries, like the aspirin bottle I just emptied last night. I will also swap the tape for a velcro strap or something and a piece of insulated copper electical wire for the coat hanger since it would be more adjustable. Wish I had thought of this before I sprung for the real thing!
If you want a light give this a try. There is nothing to it. Tell me what color (red or green) and I will even send you an LED since I have several left over. If you have any questions I will try to help.
Regards,
Raymond