This site contains materials for Dr. Tim Johnson’s Survey Sampling Methods course (Stat 422) at the University of Idaho for the fall semester of 2024.
But if you really want to use this color scheme, you can do so in R with the package painbow.
The Rmarkdown source files for everything on this website can be viewed at https://github.com/trobinj/stat516/tree/gh-pages. These are the files with the .Rmd extension.