The goal of fifty is to justify a very bad twitter joke. Installation:
remotes::install_github("djnavarro/fifty")
The fifty::shades() function takes a single colour name as input and
returns a palette generating function that progressively adds
transparency:
library(fifty)
# two palettes against the default white background
palette_show(fifty::shades("grey"))

palette_show(fifty::shades("red"))

# the same palettes against a dark background
par(bg = "black")
palette_show(fifty::shades("grey"))

palette_show(fifty::shades("red"))

To be perfectly honest I cannot think of good use case for this.
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