Fallback paywall auto-styles with your app's brand colors

The default fallback paywall on iOS and Android has been redesigned. When it appears, it extracts the dominant color from your app icon and styles the paywall automatically. Your users see a branded purchase screen instead of a generic placeholder.

In production, the fallback paywall pulls your app icon at runtime, picks the most prominent color, and calculates the best foreground color for contrast. It displays products from the current or cached offering so purchases still work. In debug builds, it overlays a clear error explaining why the configured paywall couldn't load.