4 调色板，用于"Roygbiv"

#FFA9B1
#FFC2A9
#FFFAA9
#94CC87
#8887CC
#1A9370
#93AD4A
#F1AE08
#F58809
#EC3027
#ED2F2F
#ED6F45
#EDC95C
#7BB088
#5B7882
#FF0000
#FF9500
#F7FF00
#3EFF00
#00D5FF
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