I may be biased on this one. :)
This particular question isn't actually about linguistics. It really is a color theory question, and it's prompted by a book about color in photography. And it's not like it's some wacky obscure book — see this list.
I'll update the question to make that a little more clear when I get home tonight, because I actually have an earlier out-of-print book by the same author which goes into more detail. It's in Google books but not available on line, but you can get tantalizing glimpses by searching within it for "dark yellow". I think you can see from that that the concept is, at least to the author, much deeper than a matter of which label is attached to some part of the spectrum.
The concept shows up several times throughout the book, but frankly I didn't quite under it when I read that book, and when I ran across it again — with considerably less explanation — in The Photographer's Eye, I thought I'd ask about it here.
If I were interested in the linguistic aspect, I'd definitely ask it on http://english.stackexchange.com, since that's where those experts are.
In general, though, I think we're really good on the gear, gear usage, and technical side of photography. For "how do I get this kind of shot", it's awesome. I've definitely learned a lot about lighting. And we've got people who are really good on the technical side of color, and a lot of programming/computer expertise which helps on the digital side. But I hope we can attract more people who are interested in the artistic side as well. That's another area where I've got a lot to learn.
I'm afraid we're quite soft in that area, and tend to give answers that may actually drive those experts away when they see the existing QA.
EDIT: I need to add that I don't mean to imply that people in this community aren't artists or aren't creating good art. (Many clearly are!) Or even that we don't have people who are strong on art history and theory. It's just my general sense of the site and of typical questions and responses. This is an area where we can grow.