I wonder if that says more about their focal attention. If I really fixate on a ball, it becomes the same brown or tan color. I can scan from one ball to the n

I wonder if that says more about their focal attention. If I really fixate on a ball, it becomes the same brown or tan color. I can scan from one ball to the next and mentally confirm that they all have the same color. While doing this, I actually feel my mind's "white balance" compensate as I shift my focus from one ball to another. But, by default, I do not fixate on any ball. I take in the gestalt composition, and in this mode I perceive a field with three classes of balls with different tints. This happens as soon as I reframe my attention, even right after I have just sequentially confirmed their color as above. There was also one interesting comment in the Twitter thread, posting a version that desaturated only the color stripe that overlaps the ball (at a bounding box rather than right at the circular edge of the ball). In this version, the gestalt composition shows me the same tint on all balls, and instead I see three classes of tinted tile in the background behind the balls.