Hi Leon,
Usually you can change the number of swatches display on archive page by adjusting this setting- https://getwooplugins.com/documentation/woocommerce-variation-swatches/#more-limit-for-catalog-swatches
but in your case it’s not working. Please kindly do a plugin compatibility check by doing these steps to identify the error :
=> Deactivate all of your additional plugins except WooCommerce and WooCommerce Variation Swatches Plugin.
=> See if the problem persists. If the problem resolved, you can tell which plugin might be the culprit of this error by activating your additional plugins one by one.
Looking forward to hearing from you soon.
Thank you
Problem with color output
Leon Arbitman