Hello @thomas9999,
Thanks for writing in!
I can see that you already added this custom css:
.comment-form-comment textarea {
background-color: #04202c;
border: 1px solid #5b7065;
}
.comment-form-author input, .comment-form-email input, .comment-form-url input {
color: #c9d1c8;
background-color: #04202c;
}
The code is already working on my end.
After doing the updates and saving your site changes, always remember to clear all caches (if you are using WP Rocket, WP SuperCache or W3 Total Cache) when updating so that the code from the latest release is always in use. This will help you to avoid any potential errors.
And please clear your browser cache too. You may use private browsing mode in testing your site to make sure that you are viewing the latest codes from the updates and not the cached version in your browser.
Best Regards.