Repeat this process with the red, orange, purple and more yellow paint until the branches of the tree are filled with autumn leaves.
用红、橙、紫和更多的黄色重复上一步骤，直到叶满枝头。
Orange is the bright, warm colour of leaves in autumn.
橙色是秋天叶子的明亮、温暖的颜色。
You've probably heard that leaves of deciduous trees change color in autumn because they lose their green chlorophyll molecules, allowing the underlying yellow-orange pigments to shine through.
你可能听过这种说法：落叶树在秋天变色是因为它们失去了令它们绿的叶绿素，于是下层的黄橙色素就显出了颜色。
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