If there was any chance at all of your effort producing acceptable results, you'd garner the response from others you seek and rightly so because that would tend to show that other "off colors" might also perform.
But since you haven't a clue as to what has gone on for years on this Forum before your own revelations, you seem to most on this Forum to be telling everyone with years of past experience...much of which involved trying every shade and color remotely feasible....that all the previous efforts in finding the best performing surfaces for DIY Screen construction were a waste of time.....that everyone missed the obvious.
Just use a Tan Wall.
Worse, your determined to ignore advice...preferring to instead act like those who disagree with your premise are doing so because they don't understand why your doing what it is your doing. That, and /or we are simply being argumentative.
We do "get you"...but it's like watching someone come onto a Job site and try to use a Hammer to screw in a screw. You can pound away and manage to get the Screw driven in flat, but the end result will not....nor could it ever be as effective as using the right Tool for the job. Worse, you make those who know exactly what a Hammer is for cringe at your assumptions of how it should / could be used.
Some how you think that with some deft tweak you come across, suddenly a Silk purse will appear where a Sow's Ear was before. I really think you know better, leastwise a few of your own posts allude to such. But then you make statements like you want to prove everyone wrong.
Well if you were trying something totally new and "off the wall" (...don't even go there...) you could expect some disbelief out of others lack of familiarity. People do tend to "Opt out" before they will "Opt in" on something unheard of. My own efforts with Light Fusion generated some similar responses due to the fact that using Mirrors had be considered...and dismissed out of hand. But the big difference was that I knew what painting on a Screen surface was all about...and not a lot of what I did was guesswork as much as it was experimenting to make it work. I had the knowledge within me to do so....gathered by doing 100s of hours of reading about the efforts that had gone before.
But your not doing anything new, you certainly haven't read much about what your doing, and your redoing something that literally many 1000s have done, and that 100s have explored in depth on AVS over the last 15 years. You seem to refuse to think there are in fact limits to how far you can adjust a PJ's parameters and maintain a balanced image. You've repeatedly been told that there are confined limits to how much you can adjust a Projector to compensate for a surface that is Tan. You ignore the advice given to go ask those who know as much about calibrating for different screen surfaces as many of us do on what makes for a correct Screen surface.
I believe we all know why too. You get hooted enough on a Forum dedicated to the DIY'er...a Forum where someone might accept a degree of compromise for cost and convenience sake. It would be beyond distressing for you to suffer the intense gnawing you'd get if you ventured into the Lions' Den of Professionals who would not hesitate to tell you how so very wrong you are.
Most sad of all, even if you did go, it's doubtful you'd listen to reason since you've refused all entreaties from those who help create the Screen surfaces others specialize in calibrating for. You choose to ignore that what we do is try our best to provide surfaces that are as ideal as possible...in the DIY'ers sense...that require a "minimum" of adjustment for. Not a total reversal of practical calibration criteria. We have progressed so far beyond your efforts that to many they seem like infantile meanderings.
I know they mean more to you than that...in some manner of speaking...but you must stop to consider that everyone else has been out of Diapers for a long spell now.
(... some of us have even graduated all they way to "Depends"....and your making us mess 'em up! )
I've been somewhat where you are now, trying to show people something that most would discount out of hand. But the difference is practicality.
Really...how many people out there will have your specific shade of Tan on their wall? How many will also have a really good, professionally adjustable projector...let alone the one your using? (Epson Pro model) How many would just accept whatever performance they could get off such a Tan wall, after having spent $1200-3000.00+ for the technology to project an image?
OK, on that last point...there are a few. Always have been...always will be. But they served a purpose in that most everyone has in the least realized how much better a proper surface would be if their Wall could look so good "as is". Those who scrimp to buy a PJ and who cannot afford a screen yet do want to know what might and might not suffice as a temporary Screen surface. Walls are obvious choices. various colors will enter into such circumstances. And as far as "making do", for many the performance is deemed acceptable.
But hardly ever has anyone stated that it was or could ever be "Just as good as..." as well thought out Screen solution. Where would you be with your product if such was the case? If someone need only to project on a dark brown wall with enough light to overcome ambient light...and be satisfied?
You fall partly into that grouping....except you want to show everyone that just perhaps all this DIY Screen making business is unnecessary. Your trying to show...almost force everyone to listen to your belief that all you need is a wall (...and a Tan one at that...) and a Projector and some adjustments to make thing peachy.
Bluntly stated, you are wasting time there. At most, and if you knew how to present such thoughts without seeming so far out of touch, you could hope to show how such a Tan Wall could be made acceptable to some. But never to "many".
Believe me...PB is only contributing because he's hoping your eyes will be opened somehow...eventually. NOT because he agrees with your premise. Others do not contribute because frankly, they know better and it all looks rather silly. I post because I know who you are...what you sell, how that relates to what you post...and why.
You would ignore any comments about the failings of a specific, very expensive Mfg screen, and just go on posting Image after Image....even when those images did not do you any favors. OK...you had plenty of motive to do that, I realize that. But so also do / did others. That above all else delegated your postings to being "advertisements" instead of "Discussions". Discussion is what AVS was based on.
In your efforts with this project...your Test, you choose to only accept comments that do not run counter to your line of reasoning. Even if a shot is posted for you to compare against, you make the wrong conclusions, Instead of trying to learn quickly and correctly...you drag it out by refusing to accept known dictates and well intended advice.
You may not intend to do so, but you insult both the intelligence and the years of effort spent by so many others to try to bring a level of quality and accomplishment to a Forum whose activities have always been considered "make do" by suggesting that we all had it wrong all the time. That a Tan wall can be...and is just as good a Color to use as any correct color surface...you just need to correct for any vagrancy by bottoming out almost every adjustment a PJ has.
I told you elsewhere how you needed to correct how you presented your posted thoughts....because on that Thread you continually attracted some pretty adverse responses by ignoring both the obvious fallacies of your Screen shots, and your effusive claims that such a Screen was ideal for every situation. You made a correction to some extent and things got better...even though the continued comments alluding to superiority and universality still grated on those who knew better.
You pretty much refuse to consider your wrong in this...as if proving something contrary to accepted norms was what was important. Really, it's your time to waste...and your right to waste it as you see fit. But no amount of all that waste will ever serve to prove to others your remotely clued into what's real and valid.
Please...do yourself the favor of taking the advice to visit the Video Calibration
Forum. Post a new Thread titled, "Can a Tan Wall be effectively calibrated to 6500k...or even close enough to matter?" Although you'll most likely get a few Hoots & Hollerin' directed your way, you just might get a few suggestions on exactly what sort of adjustments you could make with your 9700 to get closer. You could save yourself some time...learn something of value that will also help you correct the issues inherent in the mfg Screen you sell...and perhaps best of all, not be subjected to posts like this one.
That's gotta be something to consider.
That's it for now. Go learn something about calibration, and then get back to this. We'll all be waiting for you latest revelation with greater interest if it's backed up with some actual validity. You have at least shown that one can so some adjusting to compensate for the color push Tan creates...but we all knew that. What you'll find on the calibration Forum are people who will tell you the truth...warts and all, but be advised that you cannot dismiss their advice as easily as you have ignored such on here. But on the positive side, if your wise enough to post your questions in a sensible manner, you might get advice that will in the least bring you closer to a real degree of acceptability.
We...and you can only hope that turn out to be the case.