This painting shows the early morning sunlight flooding over the ground. If you actually look at the color of early morning or late evening sunlight on grass, it is usually a light yellow. Many people just go ahead and paint the grass green, but it is not what they actually see. Since the sun is low to the horizon, the shadows are long. The sunlight is yellow, but the shadowy parts are green. There is a strong highlight on the person and the trees where the sunlight hits them, but a definite shadow on the other side. If you look at the flower pots you will see reflected yellow light which bounces up from the grass to their sides.