Ineedsqsphelp

Is there a way to add color swatches under applicable products on a store collection page? For example, I have golf shirt products that come in multiple colors (black, white, red, etc.). I would like a circle with each of these colors below the product. Please note that not all products in my store collection have variants / multiple colors. This URL provides an example. I found it on a "Best Squarespace Design" list, so it seems doable. https://bembien.com/collections/handbags-tote Thanks in advance.