To cite package ‘KaradaColor’ in publications use:

  Fujishima M (2023). _KaradaColor: Color Palettes Inspired by Japanese
  Landscape and Culture_. R package version 0.1.5,
  <https://github.com/karadagood/karadacolor>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {KaradaColor: Color Palettes Inspired by Japanese Landscape and Culture},
    author = {Masaki Fujishima},
    year = {2023},
    note = {R package version 0.1.5},
    url = {https://github.com/karadagood/karadacolor},
  }