Ellen Lanyon used a variety of colors to create contrast between the natural and man-made forms in her composition The Green Heart. She used bright, vibrant colors to depict the man-made elements, such as the buildings and the bridge, while using more muted, earthy tones to depict the natural elements, such as the trees and the river. The contrast between the two sets of colors helps to emphasize the contrast between the natural and man-made elements in the composition.
