Is there a dark mode available?
Yes there are community driven dark themes available.
It is recommended to backup your config before installing any unofficial theme!
Vinylwalk3r Dark-Theme (custom LAF settings and modified Synthehtica BlackEye Theme )
Dracula Dark-Theme (custom LAF settings for FLATLAF-DRACULA Theme) (alternative Link)
Material Darker Theme by moktavizen
JDownloader Fluent Theme by ikoshura
Phosphor — A Dark Neon Theme for JDownloader 2
Alternatively, there is a similar tutorial on reddit describing a similar outcome without the need to modify/remove any files.
