I'm sorry, my mind started wandering around a little and I didn't really mean to say anything that would sound like you don't remember what GT4 looks like..
I was trying to say that it's not even slightly possible there's a TV set which randomly yanks the hue up on a single red circle that even moves around, and still show other red areas normally on the screen.
First, look at the third pic. The dot is slightly orange there, about the same color as the pause menu. There are Toyota banners in the surroundings, which show a normal red color, albeit a bit dark one. Also there's some green color on the pic that really is green, not something like blueish green.
Also there's almost no color bleeding in this pic, compared to the fifth one for example.
Then let's look at the fourth pic. This is the one where the dot is bright yellow. See how the pause menu still looks about the same color as in the third pic? There's not much else in this pic which is a bit sad, but the sky and AI blue dots still look the same as in other pics. If you're wondering about that dark circle around the yellow dot, boot up the game and see how it blinks in the same way on your screen
There could be something weird with the TV of course, but that means just too high luminosity levels or too strong saturation. Those would either show the screen too bright or with too vivid colors, but they can't mix the color information in that way at all.
If this really isn't happening in the game, the only possibility is that someone (a ghost maybe?) is hacking the colors on signal level so that only the red dot will show in yellow and nothing else. Either poking the cables or his TV with a magic wand
.. or maybe he actually is a really skilled photoshopper and just made these pics up to get some attention.
Anyhow, I'd really like to get
Famine to tell us his opinion on this matter, he has studied the game so much I believe he's already seen this yellow dot thing himself.