After having an abundance of cammo left over from the old Army days, I would use that for all my hiking and Geocaching adventures. Years of training to blend in and not be seen was awkward to break. I now know the importance of clothing that stands out a little. I prefer to be seen, especially if I end up lost, hurt or both. I'm not saying to dress like a clown, but having something that contrasts to all the earth tones I think is a wise way to go. I'm speaking primarily of shirts, jackets or rain gear, I still like my old cammo pants. You can get them cheap, they hold up and I like the cargo pockets!