according to a report published in the current proceedings of the national academy of sciences, color in nature occurs due to two basic processes : pigmentation and structural coloring 根據(jù)一篇發(fā)表于《當(dāng)今自然科學(xué)報》的文章,自然的顏色發(fā)生于兩種基本過程:色素沉著和結(jié)構(gòu)性色彩。