If you have $29 to spare for the interest of scientific testing, Big Five Sporting Goods has a 12 led flashlight with the manly name of "Smith and Wesson: Galaxy." It has one button with 6 white light leds. A second button first push gets 2 red leds, second, 2 blue leds and third 2 green leds. Unfortunately, you do have to go through all three colors to shut it off. We did our own test just for reading the star maps in the Sky & Telescope pocket atlas. The Atlas seems to be geared for red light, but we thought the yellow (in white light) shaded clusters, etc. showed up better in the blue light than the red. This does not address the night vision issue, maybe some of you will do a real test (Kim this is your chance). All the leds are quite bright, we may tone the whole thing down with a homemade prefilter. When we put a second red filter over the front, the blue light changed to a lovely purple, which was also good for reading the maps. Any adventurous souls willing to test it? When I looked sadly at the price tag, the saleswomen said, "yes, but it comes with batteries."