Show Product images on shop page

We have a curtain and blind webshop on Enfold. We Have fabrics in 8 colors for example. In the shop overview you can find the products with 1 image. We want below that image small thumbnails with all possible colors. For example see this product https://blinddesign.nl/product/gordijn-preston-ingeslagen-ringen-verduisterend-gevoerd/ Here we have 1 product image and 7 different colors that are possible. On the shop page we want to show all 8 colors. These products are made as simple products because of the pricing table plug-in. For the customer it is best when they see the product with all possible colors. How can we make this possible? Using variable products is not an option.