Calibre is dark but not dracula-dark

[Jogai]

Calibre (ebook-manager) is not styled with dracula-purple. It appears it just uses the built in dark theme like the screenhot on their website: https://download.calibre-ebook.com/images/4/dark-main.png

Steps to reproduce the behavior:

1. Have dracula-purple active
2. Start Calibre

Additional context
Its a python based application and since v6 they switched to using QT6. I'm not sure if those aspects have anything to do with it.