Repository: flutter
Issue: shadowColor does not have the same behavior in black or white
Labels: framework,f: material design,has reproducible steps,found in release: 3.3,found in release: 3.7,team-design,triaged-design

## Steps to Reproduce

Run the code sample once with white as background color and once as shadow color.

The shadow color should have the same visibility, no matter what said color is.
But here, I'm getting an RBG value of 1/1/1 for the pixel just above the square when the shadow color is white, but a value of 247/247/247 when the shadow color is black.
That's 8 times more noticeable. Why is there such a big difference, and how can I change things so the white shadow is more noticeable ?

<details>
<summary>Code sample</summary>

```dart
class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        backgroundColor: Colors.black,
        body: Padding(
          padding: const EdgeInsets.all(8.0),
          child: Material(
            shadowColor: Colors.white,
            elevation: 4,
            child: Container(height: 50, width: 50, color: Colors.red,),
          ),
        ),
      ),
    );
  }
}
```

</details>

<details>
  <summary>Logs</summary>

```
[√] Flutter (Channel stable, 3.3.9, on Microsoft Windows [Version 10.0.19044.2364], locale fr-BE)
    • Flutter version 3.3.9 on channel stable at C:\flutter
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision b8f7f1f986 (5 weeks ago), 2022-11-23 06:43:51 +0900
    • Engine revision 8f2221fbef
    • Dart version 2.18.5
    • DevTools version 2.15.0

[√] Android toolchain - develop for Android devices (Android SDK version 30.0.3)
    • Android SDK at C:\Users\user\AppData\Local\Android\sdk
    • Platform android-33, build-tools 30.0.3
    • Java binary at: C:\Program Files\Android\Android Studio\jre\bin\java
    • Java version OpenJDK Runtime Environment (build 11.0.12+7-b1504.28-7817840)
    • All Android licenses accepted.

[√] Visual Studio - develop for Windows (Visual Studio Community 2022 17.1.6)
    • Visual Studio at C:\Program Files\Microsoft Visual Studio\2022\Community
    • Visual Studio Community 2022 version 17.1.32421.90
    • Windows 10 SDK version 10.0.19041.0

[√] Android Studio (version 2021.2)
    • Android Studio at C:\Program Files\Android\Android Studio
    • Flutter plugin can be installed from:
       https://plugins.jetbrains.com/plugin/9212-flutter
    • Dart plugin can be installed from:
       https://plugins.jetbrains.com/plugin/6351-dart
    • Java version OpenJDK Runtime Environment (build 11.0.12+7-b1504.28-7817840)

[√] VS Code (version 1.74.1)
    • VS Code at C:\Users\jerom\AppData\Local\Programs\Microsoft VS Code
    • Flutter extension version 3.44.0

[√] VS Code, 64-bit edition (version 1.74.1)
    • VS Code at C:\Program Files\Microsoft VS Code
    • Flutter extension version 3.44.0

[√] Connected device (1 available)
    • Windows (desktop) • windows • windows-x64 • Microsoft Windows [Version 10.0.19044.2364]

[√] HTTP Host Availability
    • All required HTTP hosts are available

• No issues found!
```

</details>