To cite package ‘colt’ in publications use:

Fleck S (2018). colt: Command-Line Color Themes. R package version 0.1.1.9000, https://github.com/s-fleck/colt.

Corresponding BibTeX entry:

  @Manual{,
    title = {colt: Command-Line Color Themes},
    author = {Stefan Fleck},
    year = {2018},
    note = {R package version 0.1.1.9000},
    url = {https://github.com/s-fleck/colt},
  }