Colorado Mountain Trip in Winter: Looking for advice

I've driven my Monaco gas coach in the snow many times. Just put on your tire chains, take it easy, and slow down.
Most of the times the roads were clear and the only time I really needed the tire chains was to get in to and out of RV parks where they did not clear the snow. As far as driving in the snow, it not much different from driving in the rain, except you go slower. I did have a problem with ice forming on the windshield and then breaking up and sliding down as the defroster melted it.