I have noticed that the default theme of Pale Moon uses light system colours, while I use the dark theme for the system interface. Buttons in dialog boxes are hard to read with white text on a light background because sometimes the colours used by the operating system are coming through. This does not make much sense to me. Why not either let all the colours of the shell come through or block them all?We currently force Aqua (light) appearance in both the code and in the Info.plist.
The reason for this is when building with these newer SDKs that support dark mode, foreground and background colors get inverted. The Pale Moon MacOS theme does not take this into account and thus in dark mode Pale Moon becomes unusable because you can't read the text with the light theme.
I have it on my long term TODO list to allow it to function in dark mode, but it will require a rework to the theme... or a second dark mode compatible MacOS theme.
This is one reason why I use third-party themes which control all the colours.