[democrite]

Thank you. Dark mode alternate row color works great and the python script change builds fine. I didn't test Qt 5. I saw a comment about for Qt 5 also so maybe such would be ok. As the dark mode alternate row color issue existed for me with Qt 5.15.2, and it seemed you didn't notice it, maybe it is specific to some combo of that Qt plus Monterey.

A quick look around other parts of the app to verify, I noticed maybe in Preferences, Keyboard Shortcuts could also use alternate row colors.

Testing switching between dark and light mode, doing such while Preferences is open, something else is sometimes the palette doesn't change correctly. It doesn't happen all the time; perhaps it is something new with Qt 6. Screenshot attached.

Since I was looking at Preferences (and other parts of the UI), the slider to set main menu icon size I think looks non-native. Compared to Qt 5, the slider now has hash marks. Screen shot attached plus one from System Preferences.

And unrelated to Qt6, maybe the find/replace panel could use some padding around controls. For example each of the options (DotAll, …) are almost cut off since the next control appears after w/o padding.