I thought this was going to be about semantic coloring: https://medium.com/@evnbr/coding-in-color-3a6db2743a1e

I think semantic coloring makes way more sense than this or syntax highlighting because it helps you see the actual flow of the code, unlike syntax highlighting which helps you see the syntactic structure of the code (should be second nature to any expert) and unlike this which merely helps you see comments (which even in the example in the blogpost is secondary information to what the code actually does, which is usually the main thing I want to know when I read code).