What you're saying is what I hope is true.
The issue is what if the plasma panel has been used, and then a mainboard swap happened, and the panel was not properly treated when it was used, and so has non-uniformity of color response across the panel.
I haven't had it long enough, or critically watched it in the right conditions enough, to know whether that is a reality or not.
I'm sort of looking for good, informed opinions that might save me from having to do that critical analysis, which I would rather not spend time doing if possible.
I'm all for "just enjoy the TV", but strange anomalies like this do, admittedly, make me a bit paranoid.
(There was a recent interesting psychological study, that suggested that a tendency towards self-protective paranoia is genetic, and is reflected in one's political leanings. I am admittedly more leaning towards paranoia, but I try to keep it rational...).