Option to make default colour schemes accessible?

[hadley]

It would be a shortcut for changing all of the default colour/fill scales.

[yutannihilation]

Related: #4466

[teunbrand]

Proposal in #5946 is to run this through the theme, so set_theme() can be used to change global defaults.

# From #5946
devtools::load_all("~/packages/ggplot2")
#> ℹ Loading ggplot2

set_theme(
  theme_gray() +
    theme(
      palette.colour.continuous = pal_div_gradient(),
      palette.colour.discrete = palette.colors(7)
    )
)

p <- ggplot(mpg, aes(displ, hwy))
p + geom_point(aes(colour = cty))

p + geom_point(aes(colour = class))

^{Created on 2024-06-21 with reprex v2.1.0}

[hadley]

Maybe it's worth having a theme_grey2() or similar that uses the better palettes? Or make it an option to more of the themes? I would eventually like to make this the default if you use some tidyverse wide edition, a la tidyverse/tidyverse#284.

[teunbrand]

Thomas and I discussed this to some extent and we plan to put better defaults behind an 'edition 2025' switch, similar in spirit to the testthat 3rd edition.