Enabling dark mode in libre office

I have enabled dark mode for my system but libre office still in light mode.
i googled it and they say go to

Tools > Options > LibreOfficeccc Application Colors > Scheme and from the drop-down I select LibreOffice Dark. but just the background, not the entire application. thank you

From LibreOffice, you can navigate to Tools > Options > LibreOffice > Application Colors and set your own customizations.

Sadly, LibreOffice offers very little system-theme support. GTK Themes uses application designated classes to determine the appearance properties.
LibreOffice application code designates only the most basic classes.