Hello,
Navigate to Theme Settings > Shop > Variable products > make sure you have set the correct “Color” attribute as “Grid swatch attribute to display”: https://prnt.sc/YqWQY2EvNQ2j
If the issue remains, Please deactivate all the 3rd party plugins and activate only theme-required plugins on the site and then check the issue. Otherwise, if the issue still exists then keep the 3rd party plugins deactivated and share the WP admin login details of your site so I will check and give you a possible solution.
Best Regards