As I said when I spotted this on Twitter, I think highlighting multiple things at the same time is a bit confusing. Looking at the equations, I, for one, can't

As I said when I spotted this on Twitter, I think highlighting multiple things at the same time is a bit confusing. Looking at the equations, I, for one, can't easily spot any connections between the colorized parts of the equation and the textual description; it becomes all the same rainbow porridge. What I'd like instead: highlight only a single thing in a single equation, and accompany the highlight with a text that explains it. Then repeat the (image with highlight, textual explanation) pairs until you've explained everything. Benefits: 1. I believe for many people like me, attention and focus on a single "highlighted" item at a time is much easier. 2. You can use only a single "highlight" color that can be colorbind friendly (it's enough that it is noticeably different than black) 3. You don't need to explain the equation in a single text passage (unlike in the examples, where it looks like the author wants to explain all of the equation in a single sentence so that all different concepts in the equation are represented in different colors both in a single text and the equation itself.) Also, in my experience, yellow/orange is terrible color for text / plots in print. (Peter Flach's machine learning textbook uses yellow extensively for similar "text highlights", and it made many sentences in that book frankly unreadable. I simply could not read light yellow text on white paper background.)