To cite package ‘colors3d’ in publications use:

Kling M (2023). colors3d: Generate 2D and 3D Color Palettes. R package version 1.0.1.9000, https://github.com/matthewkling/colors3d.

Corresponding BibTeX entry:

  @Manual{,
    title = {colors3d: Generate 2D and 3D Color Palettes},
    author = {Matthew Kling},
    year = {2023},
    note = {R package version 1.0.1.9000},
    url = {https://github.com/matthewkling/colors3d},
  }