Color palettes based on the colors used by the University of Chicago.
pal_uchicago(palette = c("default", "light", "dark"), alpha = 1)Palette type. There are three available options:
"default" (9-color palette);
"light" (9-color light palette);
"dark" (9-color dark palette).
Transparency level, a real number in (0, 1].
See alpha in grDevices::rgb() for details.