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InputDecoration's iconColor, prefixIconColor and suffixIconColor not working in a TextField. #109654

@RodXander

Description

@RodXander

Steps to Reproduce

The properties iconColor, prefixIconColor and suffixIconColor of InputDecoration while being used as part of a TextField don't modify the colors of their respective icons. See the code below.

Expected results: The colors of the icons should follow their respective color properties values.

Actual results: The icons have the incorrect color.

Code sample:

import 'package:flutter/material.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return const MaterialApp(
      home: Scaffold(
        body: Center(
          child: TextField(
            decoration: InputDecoration(
              icon: Icon(Icons.ac_unit),
              iconColor: Colors.red,
              prefixIcon: Icon(Icons.abc),
              prefixIconColor: Colors.green,
              suffixIcon: Icon(Icons.add),
              suffixIconColor: Colors.blue,
            ),
          ),
        ),
      ),
    );
  }
}
Details
[✓] Flutter (Channel stable, 3.0.5, on macOS 12.5 21G72 darwin-arm, locale en-CA)
    • Flutter version 3.0.5 at /Users/rodxander/Library/Flutter
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision f1875d570e (5 weeks ago), 2022-07-13 11:24:16 -0700
    • Engine revision e85ea0e79c
    • Dart version 2.17.6
    • DevTools version 2.12.2

[✓] Android toolchain - develop for Android devices (Android SDK version 33.0.0)
    • Android SDK at /Users/rodxander/Library/Android/sdk
    • Platform android-33, build-tools 33.0.0
    • Java binary at: /Applications/Android Studio.app/Contents/jre/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 11.0.12+0-b1504.28-7817840)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 13.4.1)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • CocoaPods version 1.11.3

[✓] Chrome - develop for the web
    • Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome

[✓] Android Studio (version 2021.2)
    • Android Studio at /Applications/Android Studio.app/Contents
    • 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+0-b1504.28-7817840)

[✓] VS Code (version 1.69.2)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Flutter extension can be installed from:
      🔨 https://marketplace.visualstudio.com/items?itemName=Dart-Code.flutter

[✓] Connected device (4 available)
    • sdk gphone64 arm64 (mobile)  • emulator-5554                        • android-arm64  • Android 13 (API 33) (emulator)
    • iPad Pro (9.7-inch) (mobile) • 0E5490BF-BD58-4881-B93B-099E72F8A555 • ios            • com.apple.CoreSimulator.SimRuntime.iOS-15-5 (simulator)
    • macOS (desktop)              • macos                                • darwin-arm64   • macOS 12.5 21G72 darwin-arm
    • Chrome (web)                 • chrome                               • web-javascript • Google Chrome 104.0.5112.79

[✓] HTTP Host Availability
    • All required HTTP hosts are available

• No issues found!

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f: material designflutter/packages/flutter/material repository.found in release: 3.0Found to occur in 3.0found in release: 3.1Found to occur in 3.1frameworkflutter/packages/flutter repository. See also f: labels.has reproducible stepsThe issue has been confirmed reproducible and is ready to work onr: fixedIssue is closed as already fixed in a newer version

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