Component Style Overrides Missing in React Renderer

I am currently using A2UI v9, and I’m finding it quite difficult to override styles of the built-in components provided by the React renderer.

At the moment, there doesn’t seem to be a straightforward way to directly target or customize these components to match our design system (e.g., applying consistent styling across buttons, tabs, text, etc.).

It would be really helpful to have a built-in mechanism which allows easier style overrides—either through theming, component-level overrides.

Feature Request:
Provide a way to override or customize styles of default components in the React renderer, such as:
• Global theming support
• Component-level style overrides

This would make it much easier to integrate A2UI with existing design systems.