Perceptually uniform colormap

This can be considered a form of honesty, Transparent language.

Graphing colors - for example, area charts showing intensity using the rainbow: not good. Intensity should be shown with luminance, not hue.

IBM did research on this back in the day. There is a collection of perceptually uniform maps at colorcet.com/. Also, Matplotlib adopted a new set of defaults in 2015. Lecture at www.youtube.com/watch?v=xAoljeRJ3lU.

Cool guide: seaborn.pydata.org/tutorial/color_palettes.html

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