Thank you for the video, that was really interesting. I had no idea that brown was orange, and that makes me wonder how those darker colors are perceived by people with many more categories of colors in their minds. If simply naming brown makes it seem like a unique color, I imagine the abrupt switchover that I experienced watching that video would happen for more color-discerning people as well when they see "Dark Blue" or "Dark Purple" or "Dark Red".

Or... maybe you have be both discerning and naive in regards to it for the illusion to work.