On this simple coloring page, there is a light-colored rectangle, a darker-colored rectangle, and a differently-colored circle. If I were to color this page, I would use shades of blue and green to represent the sky and the grassy field. The first rectangle could be the sky and I would use different gradients of blue, light to dark in order to add depth to the color. I would use different shades of green for the second rectangle to create some texture, representing the grass. For the circle, I would use a complementary color, such as orange, to accentuate the sky and grass. This could represent the sun setting or rising in the background. With this combination of colors, the scene will be alive with bright colors and will look beautiful when completed.