The white are nice. The reds aren't that great, the LED's are dim and ringy compared to the red HP leds that Photon uses. I haven't tried the blue.
If you want to fool around with different colors,
www.lsdiodes.com is a good reasonably priced source of low quantities of leds. No minimum order, and low shipping charge ($2, I think). Changing the leds in the Countycomm lights is pretty trivial. Note that for longer wavelength colors (red, orange, yellow, and IR) you should use a 3 volt battery (CR2032). The shorter wavelengths (green, cyan, blue, violet, UV, and white which is a blue LED die surrounded by a phosphor) uses two CR2016's for 6 volts (current limited by the internal resistance of the tiny batteries) but that's too much for the long wavelength parts. A CR2032 is just like a CR2016 except twice as thick, so the 2032 is physically interchangeable with two 2016's.
If you put a CR2032 into the white version, it will be quite a bit dimmer than the standard 2x 2016 setup, but still bright enough to find your way around in the dark once you're night adapted, to read something (just hold the light closer to the paper), etc. Because of the lower current and the higher capacity of the bigger cell, you should get tremendous runtime, tens of hours without dimming too much. That might be of some use in a PSK.