Thanks for the tip with the display of attributes.
I thought that they are configured from the admin settings of the theme itself, and they are configured from the settings of the attributes themselves.

Yes, I solved the issue with the correct and correct display of previews of pictures when clicking on the attributes of colors in the grid of products in categories. In the attributes by color it is possible to customize both the display by color inside the card, and for previews. They are configured separately, which is quite puzzling.

Thanks for the help and answers to the sometimes stupid questions.
Good luck and prosperity!