What to change and what not?
It is an exercise that is done on a trial and error base. I often change 1 element to red and then see what happened by restarting the application in this case ncmpcpp.
Using my config you can cut down your time to learn and see what settings resulted in this design.
Compare with the meld package to see what you incorporate in your config.
I will surely keep changing this config… so there will be differences between video and article and pastebin code.