urls.txt

Color maps on the internet:

    https://github.com/jiffyclub/palettable/issues
    http://www.fabiocrameri.ch/colourmaps.php
    http://colorcet.pyviz.org/ which comes from https://peterkovesi.com/projects/colourmaps/

TODO:
    https://www.kennethmoreland.com/color-advice/
    https://datascience.dsscale.org/publications/ (can't find the maps data)
    https://sciviscolor.org/
    https://github.com/liamedeiros/ehtplot/blob/docs/docs/COLORMAPS.ipynb

    # 16 different colors
    http://alumni.media.mit.edu/~wad/color/palette.html

Package for color manipulation
    https://github.com/colour-science/colour
    https://github.com/colour-science/awesome-colour

Create your own color scales. Very nice.
    https://gka.github.io/palettes/#/23|d|00429d,96ffea,ffffe0|ffffe0,ff005e,93003a|1|1

NCS:
    https://www.ncskleuren.nl/ncs-kleursysteem-ncs-notatie/