Originally posted by Sierra1
If you haven't made up your mind yet, you might want to consider the green. Your eyes are most sensitive to the green end of the spectrum, and thus you get the most "bang for the buck" with green. Somewhere around here I have a link to an astronomy website that 'splains all this, but can't locate it at the moment.
Green also preserves your night vision the best, as it is more efficient than any other color, and therefore your eyes require less total light to define an object. It is the total amount of light your eyes absorb that is the defining factor in preserving night vision.
In addition, you will find that the contrast of the green light is superior to either the blue or white. It presents as a very "clean" light, with far less blurring at the edges, even at the very edge of the light pattern.
Of course, if color differentation is important, you will have to stick with white. But if not, you will find yourself pleasantly surprised with the green. All of my LED's are now in green (I've experimented with every color), with the exception of a white Innova I keep in the car for map reading.
Good luck with your choice,
James