If your products have an extensive range of color swatches to showcase on the products grid, you have the option to limit the number of swatches displayed. This way, the next set of swatches will be shown as a count.

By clicking on the count, you will be able to view all the available swatches for the product.

To enable this option on your store, Go to Theme Settings -> Products Grid -> Max Colors to show

Here you can set the maximum number of swatch you want to display on products grid.