If you are a git user, you can install the theme and keep up to date by cloning the repo:
git clone https://github.com/dracula/jdownloader2.git
Download using the GitHub .zip download option and unzip them.
GraphicalUserInterfaceSettings: Look And Feel Themeand change the value from Default to
FlatDarculaLaf.jsonfile and place it in
JDownloader\cfg\laf\(Create the folder structure if it doesn't exist).
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