that a great light too however its more expensive and has a more complicated user interface, also the ergonomics of the ligt doesn't suit everyone since it is bigger and right angled
definitely go with the gerber recon. u can buy it on ebay for around 30 bucks
There are two options. And it really depends on what the use is for. Why do you need colored light for hunting? Anyway there is the Surefire Kroma. White, blue and red.
I would recommend the 4sevens Quark RGB, it is all flood though but very bright.
What's yer budget? The Streamlight Sidewinder is probably a good median between cost and quality, and unlike the Gerber Recon, is actually bright enough for navigation even when using the colored LEDs.
This one here has 10 colours (or colors for the Americans) for $25: http://www.thinkgeek.com/gadgets/lights/8db4/?srp=1