Seconding the the notion that your colored-in example is a fantastic addition and should be included. I had thought of this in terms of The Anatomy Coloring Book where the coloring is mostly a way to engage with the visual material in a physical way, which aids recall. But your specific coloring actually highlights the algorithm in an effective way, making it more clear - and I can see that a teacher might be able to quickly glance at a student coloring and see that they did not grasp the concept (by, say, using a distinct color for each block number throughout, showing no progress through the algorithm). Your annotations are excellent as well, and the whole thing serves as a great model of how such a book should be used. Great stuff.