The direction of this "flow" is from the northwest, which is generally not a good direction for anyone east of the mountains to get snow and or rain. However, the central mountains to the western slope will have lots of moisture Sunday and Monday. Some will have feet of snowfall. Many of the resorts will be adding well over a foot of new powder in time for the holiday rush of skiers/riders. Those resorts that face west and north will come out ahead of the others.
It may surprise you that very little of all that moisture is going to get on the eastern half of the state, including the Denver area, although the entire state will see the clouds.
Being realistic we won't and can't say that Denver and the metro areas won't have snow falling on Christmas. It certainly remains a possibility. However, the chance for snow on the ground or actively falling isn't overly optimistic.
