Start marking your calendars now, fans of fall foliage, because it looks like spectacular leaf-peeping is in store for Colorado this year. That’s the outlook according to Dan West, one of the state’s leading forestry experts, who spends a lot of his time in airplanes every August, evaluating forest health across the state. “From the air, everything is looking very green,” said West, an entomologist for the Colorado State Forest Service and a member of the faculty at Colorado State University.