I propose to expand the functionality of these components:
Add a color change to the App Bar and Navigation Bar. if there are elements behind. If there are no elements behind, then there will be a background color, and if you start scrolling, the color of the components will change to another.
I can add this, but as Sliver components (the one you put under CustomScrollView/NestedScroll) rather than Scaffold child. Scaffold was never meant to have a fancy scroll effect.
I propose to expand the functionality of these components:
https://github.com/user-attachments/assets/2b84ba04-534f-431c-8e23-3afb21af9f37
https://github.com/user-attachments/assets/afce04ca-bfa3-4327-ba46-11d0f2d0d81f
https://github.com/user-attachments/assets/4eceda30-61b4-4f32-966a-6b17992df217
I understand if this suddenly violates the library's design principles and you don't want to add this feature.