Answer:
Ellen Lanyon is an American painter known for her vibrant, colorful compositions that often depict the natural world. In her painting "The Green Heart," Lanyon uses color to create contrast between the natural and man-made forms in the composition.
One way Lanyon achieves this contrast is by using cool, muted colors for the natural elements in the painting, such as the trees and grass, while using bold, bright colors for the man-made elements, such as the buildings and the bridge. The cool, muted colors of the natural elements help to create a sense of calm and serenity, while the bold, bright colors of the man-made elements add energy and vibrancy to the composition.
In addition to using color to create contrast, Lanyon also uses value (the lightness or darkness of a color) to create depth and dimension in the painting. The darker values of the natural elements, such as the trees and grass, help to create a sense of depth and distance, while the lighter values of the man-made elements, such as the buildings and the bridge, help to bring them forward and make them more prominent in the composition.
Overall, Lanyon uses color and value effectively in "The Green Heart" to create contrast between the natural and man-made forms and to create depth and dimension in the composition.