Product List Variation

Hi! In my customer’s site, they’re using products with two global attributes: color (using image patterns) and size (using images). Both attributes are working well with the plugin at product page. However, in the product list, the user needs to chose obligatory color and size too. When I set to show only “color” in the product list (and hide size), it shows the image os the color but not the product variation. The color attribute is a set of images with the real pattern of colors of each variation, not a thumbnail of the product neither the HEX or RGBA color.