Default background colour for QToolbar?

[Perdrix]

Is it QPalette::ColorRole::Button? Is this true regardless of the active Theme (Dark/Light)?

[SimonSchroeder]

This depends on the operating system. The default style for Windows does not respect the QPalette in a lot of places. It is much better to use a stylesheet instead. This might work with the Fusion style which is only the default on Linux.

[Perdrix]

@SimonSchroeder Thank you