Demo script: http://gnuplot.sourceforge.net/demo/pm3dcolors.html
The sixth part of the gnuplot tutorial series is very specific: I take an in-depth look at the palette feature that is used whenever part of your plot is colored in according to some data value. There are different features to help you achieve the color gradient that you want and that highlights your data in the best possible way.
The font used in the video and thumbnail is called Inconsolata by Raph Levien. It's a beautiful monospaced font and if you do any programming at all and are looking for a different font style for your editor you might want to check out his website: https://levien.com/type/myfonts/inconsolata.html
