Thanks for the quick response! That’s the code I am entering yes. It’s being added to a Woocommerce product, inside the product ‘Add-ons’ (which is a Woocommerce plugin).
Here’s the link to the page >https://109.199.123.118/~marylove/index.php/product/noora-guest-pack/
The pop-up link is underneath ‘Personalised colour scheme’ and is labelled ‘colour chart’.
Thanks