To cite package 'colourlovers' in publications use:

Leeper TJ (2020). colourlovers: R client for the COLOURlovers API. R package version 0.3.6.

Corresponding BibTeX entry:

  @Manual{,
    title = {colourlovers: R client for the COLOURlovers API},
    author = {Thomas J. Leeper},
    year = {2020},
    note = {R package version 0.3.6},
  }