This is a complete (I think) dark color palette for the Qt 5 Fusion theme, as well as a nice style sheet for the tool tips that make them blend better with
python - Only Color Gradient from Qt5 ColorDialog - Stack Overflow
PyQt5 tutorial 2024: Create a GUI with Python and Qt
python - How can I set button background colours in Qt, even overriding the platform theme? - Stack Overflow
Руководство по PyQt5
Release] Qt dark orange stylesheet - Coding - Tech-Artists.Org