I exclusively buy only Neutral or Warm White LEDs for my lights if they are available since they look much better in the woods to me. The warm lights make everything look natural like the old MAGLITEs, just way brighter.
For hunting I use a RED drop in LED on my Eagletac T20C2 and it easily shines 100 yards no problem. If I had a rifle scope I could probably use it out much farther, but I prefer bow hunting.
On a side note, don't think with a red or green light you are invisible to animals out there, just their eyes are less sensitive to it so they don't notice it as easily unless there is movement. I walk with the light shining on the ground in front of me when I walk in. But if the animals catch the movement of the light directly from the end of the flashlight where they can see the LED, then they will get alerted.
I was walking down a dirt road this weekend with the light on my bow when I was stopped dead in my tracks by animals moving in the brush next to me. I just kept the light pointed away from them and slowed my walking speed and crept by them without them being alerted enough to dart off.