Yes but it depends on the generation. :)
I have several IR lights (880-940nm) and my device happens to like my 880nm the best. IIRC, the higher the generation the higher the wavelength it's able to detect.
Dave,
My "old" eyes are quite different, I have no problem with the cooler colors but the warmer colors (especially red) just play heck with my eyes.
I'll try to image a compairision with my 650 and 635 for your viewing pleasure.
Ray