Aliases: seq_gradient_pal
Keywords:
### ** Examples x <- seq(0, 1, length.out = 25) show_col(seq_gradient_pal()(x))
show_col(seq_gradient_pal("white", "black")(x))
library(munsell) show_col(seq_gradient_pal("white", mnsl("10R 4/6"))(x))