R 配色（挑花眼的色卡19色）

cols =c("#999999","#FF0099", "#E69F00", "#56B4E9", "#009E73", "#F0E442", "#0072B2", "#D55E00", "#CC79A7","#990000","#9900cc","#66FF66","#663300","#0000FF","#CC0033","#FF0000","#000099","#660066","#333333") 

效果如下：

 20色：

cols = c("#999999","#FF0099", "#E69F00", "#56B4E9", "#009E73", "#F0E442", "#0072B2", "#D55E00", "#CC79A7","#990000","#9900cc","#66FF66","#663300","#0000FF","#CC0033","#FF0000","#000099","#660066","#333333","#9966CC")

24色

cols = c("#999999","#FF0099", "#E69F00", "#56B4E9", "#009E73", "#F0E442", "#0072B2", "#D55E00", "#CC79A7","#990000","#9900cc","#66FF66","#663300","#0000FF","#CC0033","#FF0000","#000099","#660066","#333333","#FFCCCC","#993366","#33CC33","#000099","#CC9900")