Wellllll, I shared some examples of this illumination effect almost five years ago but by golly the blog post was really light on specifics. Those who may have wanted to try it out were really up against it trying to reverse engineer it based on some descriptions and a screenshot. What was I thinking? Please forgive me and accept this ArcGIS Pro (v 2.8.2) project package, which is more accommodating. Maybe it will fill you with gumption to tweak the colors and parameters to get all sorts of custom lighting effects?
Pop quiz, hot shot. Can you identify these places?