How does the author use imagery in the novel, The Bone Wars?

The author uses lyrical passages of description and rich imagery to describe the people and land of the American West. Thad is first glimpsed by Julian from a train and described thus: His skin was burnished a deep coppery bronze. His eyes were gray-green, the color of the prairie grass, and they did not have the vacant stare of the station-platform Indians, nor the frenzied ecstasy of the gentlemen-travelers.