You can easily implement dark mode in a toolkit, you just add the new colors and switch based on the user preferences. The issue is that a lot of apps hard code

You can easily implement dark mode in a toolkit, you just add the new colors and switch based on the user preferences. The issue is that a lot of apps hard coded colors against the light background of the widgets. If you can find a solution for that, please share it. That’s why people like the old windows interface (windows 2k). It was fully themable.