As the title says. I am building an online store for a new small business that I have started with a friend. We are selling clothing where the customer can customise the product to their liking. They are able to pick the main and secondary colour for every product as well as uploading artwork to be included.

The problem is that there are 18 available colours for the primary and secondary sections of the clothes. Which means there are 324 variations for each product and that's before you include sizes.