Dark Mode

Check the button at the top right of this doc.

It allows to enable / disable dark mode!

However, plots are not automatically moved to dark background! We will see later how this is possible

library(tidyverse)

mpg %>%
  ggplot( aes(x=reorder(class, hwy), y=hwy, fill=class)) + 
    geom_boxplot() +
    xlab("class") +
    theme(legend.position="none")