Why do leaves change color in the fall season? Why do leaves change color in the fall season? Why do leaves change color in the fall season? Why do leaves change color in the fall season? Why do leaves change color in the fall season? Why do leaves change color in the fall season? Why do leaves change color in the fall season? Why do leaves change color in the fall season? Why do leaves change color in the fall season? Why do leaves change color in the fall season? Why do leaves change color in the fall season?