Walys Yes. You have to use Topic Starter extension.
Install - GitHub Repo
composer require dem13n/topic-starter-label
And I did some changes in the source code of the extension to show it as author. Without that modification, it appears as the Topic Starter. If you want to do the modification, the path is /vendor/dem13n/topic-starter-label/locale. You have to open en.yml and replace topic_starter: Topic starter with topic_starter: Author. Save and clear cache. That's all.
ctupramod Thank you for the tip about custom color.
