You would love MoGraph fields then 🙂
CA stands for character animation. It is just a habit of naming the file with that suffix if I used something from CA module.
The file 91 is build with help of fields - I attached a pre R20 version
Glad you liked the tutorial and that you have good use from files. Cmotion is really cool but I don't think that many people are using it, and they should
91_Collision_color_change(MG+Dyn).c4d