When leaves change color in autumn, trees are pulling back their green chlorophyll to save energy for winter, unmasking the hidden gold and orange pigments that sat inside the leaf all summer long. But the most vibrant reds are created anew, manufactured by the leaf from trapped sugars right as the season shifts. The forest isn't just fading away; it is actively painting a final, brilliant masterpiece before winter sets in. 鉂勶笍馃崅