That might very well be the case, but I can certainly see the difference between how a plasma TV displays colors (more movie-like) and the way LED screens do (less movie-like, a lot more difficult to suspend disbelief while watching it).
One of my close friends has one of these 4K TVs and watching "Friends" (the TV show) at his home was quite eerie, it felt like all the characters were part of our room, and not in a good way. Color- and resolution- imperfections make a movie, well, more movie-like, at least for us people who got to see movies displayed on screens not very much unlike what you could see in "Cinema Paradiso" [1]
I think you're noticing the "soap opera effect" which is caused by increasing the frame rate with motion interpolation. You can normally find a way to turn it off.
I've been told that more than once, but I don't think that avoids the "perfect colours" effect.
People in here seem not to understand that some of the colours not displaying perfectly or a colour "merging" into its neighbouring screen colour is a feature, not a bug. I do not want to see all the pixels and all the colours on the screen as they are, it's as simple as that.
Whatever the actual reason, my wife re-bought the DVD set of the Lord of the Rings trilogy after switching to the Blu Ray version, citing basically the same reason, and that was just DVD-resolution to 1080p. And she still goes to see them in the theater every so often when they show and thinks they look fine there. Go figure. Maybe some companies are messing with color grading and such in higher res versions, or otherwise applying some sort of filters? Like how The Matrix was made much greener after the first theatrical and first DVD release.
Googling around, it looks like only the extended-edition fellowship blu ray had some fairly severe color issues (much greener than every other release). That might have been part of what she picked up on.
