默认颜色hue_pal library(scales) show_col(hue_pal()(1)) #n为1~6 show_col(hue_pal()(2)) #n为1~6 Green Sequential “#EDF8E9” “#C7E9C0” “#A1D99B” “#74C476” “#41AB5D” “#238B45” “#005A32” BrBG(divergent) “#8C510A”