I think we do really want to show the dark scheme in both modes. It simply looks too cool to not support it in windowed mode ;) Plus, it will confuse users if it doesn't take effect without fullscreen.

As for extra color changes in windowed mode, it might be ok to only change the `h1` style for now. Even if the inputs are still white, it should be ok (and IMO the title bar can stay as it is - it even looks kinda cool when the body background is black).