color brewer - SERP Analysis

https://colorbrewer2.org/

https://r-graph-gallery.com/38-rcolorbrewers-palettes.html

https://jiffyclub.github.io/palettable/colorbrewer/qualitative/

https://www.betterevaluation.org/tools-resources/colorbrewer-20

https://en.wikipedia.org/wiki/ColorBrewer

https://www.mathworks.com/matlabcentral/fileexchange/45208-colorbrewer-attractive-and-distinctive-colormaps

https://www.nceas.ucsb.edu/sites/default/files/2020-04/colorPaletteCheatsheet.pdf