The answer is visual imagery.
Visual imagery refers to the use of descriptive language that creates vivid mental pictures or images in the reader's mind. In the last five lines, the language used appeals to the reader's sense of sight, such as "crimson leaves," "golden hues," "pink sky," "peachy glow," and "painted canvas." These descriptions help the reader to visualize the scene being described and create a more engaging and immersive reading experience.