Congratulations - writing a book and getting it published is no easy task so kudos to you.
Now, I ask this question not only to satisfy my own curiosity, but that of others in a similar position who may be considering buying your book. For those of us who already own Andrew Rodney's Color Management for Photographers and Bruce Fraser's et. al, RWCM 2nd edition, could you briefly explain what differentiates yours from theirs, or otherwise put, what approaches or perspectives or information do you bring to the table which they don't? I'm looking to understand the value-added I would obtain from buying a third volume on this subject.
That's a very valid question, and actually one that I ask myself before starting, or even proposing any book to my publisher. There's no need to re-do what's been said before... and many so well, yet, learning is almost always about restating in different ways, until the parts fit, or the light goes on.
As I've said above, this is a very visual approach. You can literally see the colors' relationships change, and you can start to understand, again, very visually, what is happening in the color management system when this information is processed.
I've got nothing but respect for both those authors and all the work they've done, but having said that, it wasn't until a cryptic clue from Joe Holmes about how the math works, that is, how values are essentially "graphed" in three dimensions, and those "graphs" are compared mathematically, that the entire color management engine became something more than a black box for me. (I'm using quotes because still, Joe rails on me for calling it a graph... heh.)
If you're well versed on Color Management and feel you understand how the system, and the math works, I'd think you may get more out of just messing with the ColorThink Software. If you're trying to get your head around how color management works, as a system, but more importantly how and when you can use that system for making better images, then I think this is a unique approach. Also, being as immersed in capture and RAW processing as I am, a lot of what I'm trying to explain is the RAW file, and how that works within the color management model.
I tried very hard to always keep this in the context of taking, processing and printing a photograph, rather than becoming a color scientist...