Last week a friend and I were hiking up the Dawson Saddle trail, and within a few minutes, up that steep part at the beginning of the trail, a baby rattler was laying there, right across the trail. It was the regular brown patterned color. Pretty little thing, it was maybe 10-12 inches long, not very big around, but definitely a rattler. This would have been at about 8000 ft. elevation (Dawson Saddle is 7901, and the trail climbs steeply at first). Maybe they have to get older before they turn darker?