Hey Henrik,
Thanks for reaching out!
It looks like the product tables have changed to a gray color and you would like to change this back to white, correct?
It seems you have some custom product tables that are not default to WooCommerce core. Are you perhaps using a plugin that allows customization of product tables or a page builder plugin?
If so, please let us know which plugin you are using and we’ll be happy to help point you in the right direction ??
However, if this is not the case, it’s possible that this is coming from your current theme, which seems to be Woodmart. If you temporarily switch your theme to a default theme such as Storefront, does the issue persist?
We recommend using the free?Health Check?plugin which allows you to deactivate plugins and change the theme while still logged in, without affecting normal visitors to your site or making direct changes to your live site.
In the meantime, custom CSS can be used to get the product table on the Single product page back to white.
You can try adding the following custom CSS to Appearance → Customize → Additional CSS and see if this does the trick:
/* Change product table color to white */
tbody tr:nth-child(even){border-bottom:0;background-color: ffffff;}
If you’d like to learn more about CSS, I highly recommend using the free tutorials at w3schools. Here, you can find the basics of selectors (how to target the right element on the page), and properties (how to change the element on the page).
Cheers!