| color_distance | Heuristics for Color Distances and Locations |
| color_order | Heuristics for Color Distances and Locations |
| crayons | Crayons Color Palettes |
| pick_colors | Heuristics for Color Distances and Locations |
| plot_palette | Plot Palette Colors |
| scale_color_crayons | Crayon Color Scales for 'ggplot2' |
| scale_colour_crayons | Crayon Color Scales for 'ggplot2' |
| scale_fill_crayons | Crayon Color Scales for 'ggplot2' |