Description

Existing Behaviour
Card takes default white color even if surface color is not-null.

Modified Behaviour
If surface color is given then card respects the surface color else it takes default white color.

class MyApp extends StatelessWidget {
  static ColorScheme colorScheme = ColorScheme.light().copyWith(
    surface: Colors.purple,
  );
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      theme: ThemeData(
        colorScheme: colorScheme,
      ),
      home: Scaffold(
        body: Center(
          child: Card(
            child: Text(
              "Card",
              style: TextStyle(fontSize: 20),
            ),
          ),
        ),
      ),
    );
  }
}

Related Issues

fixes #28783

Tests

I added the following tests:

• Test written for verifying card applies surface color if Color property in Card, [CardTheme.color] and [ThemeData.cardColor] not given respectively.
• This test written forColorScheme.light().copyWith() , but this implementation remains true for ColorScheme.dark() , ColorScheme() . Should I write test for all of them?

Checklist

• I read the Contributor Guide and followed the process outlined there for submitting PRs.
• I signed the CLA.
• I read and followed the Flutter Style Guide, including Features we expect every widget to implement.
• I read the Tree Hygiene wiki page, which explains my responsibilities.
• I updated/added relevant documentation (doc comments with ///).
• All existing and new tests are passing.
• The analyzer (flutter analyze --flutter-repo) does not report any problems on my PR.
• I am willing to follow-up on review comments in a timely manner.

Breaking Change

• No, no existing tests failed, so this is not a breaking change.