Rattlesnakes up close & personal

I almost ran over this Western Prairie Rattlesnake as it was lying in the road at John Martin State Park. It's light tan/yellowish coloration was such good camouflage that I almost didn't see it in time so I swerved hard to miss it. When I returned to my car for my camera, one of my group found a second Western Prairie Rattlesnake in the grass nearby.These snakes are definitely colored to blend in with the prairie vegetation. This snake was about 3 1/2 feet long. They are found throughout much of Colorado and I have run into them in about 5-6 counties. SeEtta