Petr Baranovskiy has released an R package:
I was happy to see that some people liked those and suggested that I should make a package. I tended to view packages as large collections of code and functions, but as Sébastien Rochette wisely put it, “If you have one function, create a package! If this simplifies your life, why not?” And since I will be frequently using these themes in subsequent posts, I’d like to make it as convenient as possible for the reader to install and use them.
So here is the ggwebthemes package! It has the same three themes, which I have tweaked and improved some more.
Click through for instructions on how to install ggwebthemes via GitLab.