coloration      
noun [ U ]  biology specialized uk/ˌkʌl.əˈreɪ.ʃən/ us/ˌkʌl.əˈreɪ.ʃən/
 (动物或植物的)颜色,色彩,花纹
the fact of colour being present on an animal or plant and the pattern that the colour makes
 
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