Enjoyed the video. I dream of the day that I can have a shop with good space. In planning for a tool wall, I am anticipating using rows of french cleats along the wall for two reasons. One is that I don't lock myself into one arrangement and it also makes the tool holders portable to carry around and outside the shop.
Carrying tools around the shop tells you you put them in the wrong place... Used in more than one place? Consider duplicates. I have four (reduced) sets of twist drills in my small shop. Outside the shop? A dedicated tool box is the way to go.
Stained? Why not use ebony? With mother of pearl inlay. Good enough for Studley, and this is supposed to be better ('ultimate' means it is the best that ever was or ever can be).