How Does Flutter Filming Work?

I really hope it's going to go well with the internet. So far everything is smooth. I'm enjoying the app for what I can't see so far. It's really beautiful. Like for the dark mode, like how, how does that work? I'm using the film, the flutter film. And then I just switch the theme with this.Like not everything. I had to do some custom code for as well because maybe it's me who's not as good with flutter filming. But not everything fits into the film. For example, for the bottom bar, I have some gradients. This is not going to fit into the photo theme. There's a few