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Monito - Perception, although it can be influenced by different variables, Will remain constant with the same variable for the same person. So referencing these changes is irrelevant to my thread which was about reproducing accurately the Same perception for oneself.
Sure, but the variables are never the same.
Not for the same person even at the same time of day or the same place. You just have to look a different angle, or change the background from half sky to all sky or to all grass by changing vantage point or walking around the subject. You change variables simply by asking the person to stand ten feet away from a brick wall instead of ten feet away from a blue car.
Your shirt can make a difference if you are three feet away instead of seven feet.
Perception is very fluid. To think otherwise is just fooling yourself.
The lighting we experience in a room lit by a single 100 watt incandescent light bulb is very warm (3200 K). If you balance for Daylight, a white paper will be very orange. Yet we do not perceive it that way unless we are trained as photographers to really observe carefully. (Most photographers aren't as good observers as they'd like to think they are.)
All you can do is to use the ColorChecker or gray card to obtain a neutral white balance on one photo, including the skin tones of the person or the main object. That way you can find the true colour of the person for reference.
For any change in lighting (doesn't take much) you have two options:
1) Take a new gray card / ColorChecker reading and use that as the starting point for a subjective alteration.
2) Put the image side by side with the reference photo and balance the colour so the tones match and use that as the starting point for a subjective alteration.
In either case you have to apply subjective alteration. It is part of the craft and it requires good judgement to make the results pleasing and not 'noticeable'. This is because even though perception is fluid, we don't see "neutral" very often. So we (the general public) expect late afternoon sunlight to be warm, even if we can't articulate why or reason out the clues. People will see clues in the photo such as long angles, softer shadows, etc., and subconciously start applying a warm light compensation, so the photo better be on the warm side of neutral or it will look weird.
How much warmer? That's the taste and judgement of the artist.
Unless of course you are a journalist, in which case, go with either the neutral balance or a standard canned balance ("Hmm, sun shining, OK, Daylight. Done. Incandescent light mixed with fluorescent? Auto. Done.").