The author describes the color of the landscape to reinforce the sun's influence on the environment.
We can arrive at this answer through the following information:
The author reinforces the description of the colors of the environment, showing how the forest does not have the characteristic green and how the earth has a boring color, to reinforce the importance of the sun in the colors of our landscapes.
More information:
https://brainly.com/question/16497603?referrer=searchResults