From "Beautiful colormaps for oceanography": cmocean
From Scientific colormaps
Colorschemes designed with color-vision deficient users in mind, by authors such as Paul Tol, Masataka Okabe, Kei Ito, and Martin Krzywinski.
Colors extracted from flags of different countries and regions, downloaded from Flagpedia. Intended to represent these regions in visualizations, but not necessarily effective. Many flags have similar colorschemes. The flags are named according to the region's ISO3166 two-letter abbreviation (often the same as top-level WWW domain), with any hyphens removed.