Awesome! Glad it worked out!
Yes, you can style those messages by changing the code in that plugin directly. A few words of caution: Be very very careful when editing this source file! Any mistake can cause the plugin to not work as expected or have other undesired outcomes. Additionally, those changes will be overwritten when you update the plugin, so keep that in mind before making changes.
To get this workaround going, you can go to Plugins > ‘Edit’ link under the MailChimp List subscribe plugin. You should be brought to the mailchimp/mailchimp.php file already. From here, you can use the find function in your browser to locate the text of that success message (class name “mc_success_msg”) and the error message (class name “mc_error_msg”) and replace the styles with your desired styles. Be sure to hit up a developer if you need assistance with editing that file or for advice on what to place there to suit your needs.
Once you’ve made your changes, hit the ‘Update File’ button to save, then test your form. Again, the message will need to be changed again if the plugin is ever updated, and be careful when editing this file.
Thanks again for writing in! I’m going to resolve this thread for now, but please feel free to start another back up if you have any other questions or concerns.
Best,
Garnet