The macOS and Win10 support dark mode, lazarus only support to change the editor schema, but how to change the entire lazarus ide to dark?
Only Windows Explorer under Windows 10, and apps made for the store. Also with Electron apps there's an API to detect if the OS is running in dark mode and get the user color, and these are Win32 apps, so it must be possible to do with an app made with Lazarus.
There's an undocumented dll call that changes the theme of the application, but I tried it and didn't work. It applies the look of the Windows Explorer to the app.
On macOS I know is possible changing the manifest, but not everything is fine tuned and of course it requires latest trunk of fpc and lazarus.