The example in rsf/tutorials/colormaps reproduces the tutorial from Matteo Niccoli on how to evaluate and compare color maps. The tutorial was published in the August 2014 issue of The Leading Edge. Madagascar users are encouraged to try improving the results.

See also:

Several new color palettes have been recently added to Madagascar (thanks to Aaron Stanton): color=seismic (red-yellow-white-black, popular among seismic interpreters), color=owb (orange-white-black), and color=rwb (red-white-black).