diff --git a/example/audio_classification/lib/main.dart b/example/audio_classification/lib/main.dart
index e65a6ee..f0609ea 100644
--- a/example/audio_classification/lib/main.dart
+++ b/example/audio_classification/lib/main.dart
@@ -186,7 +186,7 @@ class _MyHomePageState extends State<MyHomePage> {
       backgroundColor: Colors.white,
       appBar: AppBar(
         title: Image.asset('assets/images/tfl_logo.png'),
-        backgroundColor: Colors.black.withOpacity(0.5),
+        backgroundColor: Colors.black.withValues(alpha: 0.5),
       ),
       body: _buildBody(),
     );
diff --git a/example/bertqa/lib/ui/qa_detail.dart b/example/bertqa/lib/ui/qa_detail.dart
index 0271923..9f7d0df 100644
--- a/example/bertqa/lib/ui/qa_detail.dart
+++ b/example/bertqa/lib/ui/qa_detail.dart
@@ -140,7 +140,7 @@ class _QaDetailState extends State<QaDetail> {
             padding: const EdgeInsets.all(16),
             decoration: BoxDecoration(color: Colors.white, boxShadow: [
               BoxShadow(
-                  color: Colors.grey.withOpacity(0.5),
+                  color: Colors.grey.withValues(alpha: 0.5),
                   spreadRadius: 2,
                   blurRadius: 5,
                   offset: const Offset(0, 3))
diff --git a/example/digit_classification/lib/main.dart b/example/digit_classification/lib/main.dart
index b9c3145..dc90359 100644
--- a/example/digit_classification/lib/main.dart
+++ b/example/digit_classification/lib/main.dart
@@ -91,7 +91,7 @@ class _MyHomePageState extends State<MyHomePage> {
         title: Center(
           child: Image.asset('assets/images/tfl_logo.png'),
         ),
-        backgroundColor: Colors.black.withOpacity(0.5),
+        backgroundColor: Colors.black.withValues(alpha: 0.5),
       ),
       body: Center(
         child: Column(
diff --git a/example/gesture_classification/lib/main.dart b/example/gesture_classification/lib/main.dart
index 803e967..9cb9d15 100644
--- a/example/gesture_classification/lib/main.dart
+++ b/example/gesture_classification/lib/main.dart
@@ -166,7 +166,7 @@ class _MyHomePageState extends State<MyHomePage> with WidgetsBindingObserver {
         title: Center(
           child: Image.asset('assets/images/tfl_logo.png'),
         ),
-        backgroundColor: Colors.black.withOpacity(0.5),
+        backgroundColor: Colors.black.withValues(alpha: 0.5),
       ),
       body: Center(
           // Center is a layout widget. It takes a single child and positions it
diff --git a/example/image_classification_mobilenet/lib/main.dart b/example/image_classification_mobilenet/lib/main.dart
index fad0275..3eacfab 100644
--- a/example/image_classification_mobilenet/lib/main.dart
+++ b/example/image_classification_mobilenet/lib/main.dart
@@ -88,7 +88,7 @@ class _BottomNavigationBarExampleState
     return Scaffold(
       appBar: AppBar(
         title: Image.asset('assets/images/tfl_logo.png'),
-        backgroundColor: Colors.black.withOpacity(0.5),
+        backgroundColor: Colors.black.withValues(alpha: 0.5),
       ),
       body: Center(
         child: _widgetOptions?.elementAt(_selectedIndex),
diff --git a/example/image_segmentation/lib/main.dart b/example/image_segmentation/lib/main.dart
index c8c8fbe..5bb80af 100644
--- a/example/image_segmentation/lib/main.dart
+++ b/example/image_segmentation/lib/main.dart
@@ -226,7 +226,7 @@ class _MyHomePageState extends State<MyHomePage> with WidgetsBindingObserver {
                     // parse color from label color
                     color: Color(ImageSegmentationHelper
                             .labelColors[_labelsIndex![index]])
-                        .withOpacity(0.5),
+                        .withValues(alpha: 0.5),
                     borderRadius: BorderRadius.circular(8),
                   ),
                   child: Text(
@@ -251,7 +251,7 @@ class _MyHomePageState extends State<MyHomePage> with WidgetsBindingObserver {
         title: Center(
           child: Image.asset('assets/images/tfl_logo.png'),
         ),
-        backgroundColor: Colors.black.withOpacity(0.5),
+        backgroundColor: Colors.black.withValues(alpha: 0.5),
       ),
       body: cameraWidget(context),
     );
diff --git a/example/object_detection_ssd_mobilenet/lib/main.dart b/example/object_detection_ssd_mobilenet/lib/main.dart
index 12819e7..4556e11 100644
--- a/example/object_detection_ssd_mobilenet/lib/main.dart
+++ b/example/object_detection_ssd_mobilenet/lib/main.dart
@@ -64,7 +64,7 @@ class _MyHomeState extends State<MyHome> {
     return Scaffold(
       appBar: AppBar(
         title: Image.asset('assets/images/tfl_logo.png'),
-        backgroundColor: Colors.black.withOpacity(0.5),
+        backgroundColor: Colors.black.withValues(alpha: 0.5),
       ),
       body: SafeArea(
         child: Column(
diff --git a/example/object_detection_ssd_mobilenet_v2/lib/main.dart b/example/object_detection_ssd_mobilenet_v2/lib/main.dart
index 8071e39..7027ba5 100644
--- a/example/object_detection_ssd_mobilenet_v2/lib/main.dart
+++ b/example/object_detection_ssd_mobilenet_v2/lib/main.dart
@@ -49,7 +49,7 @@ class _MyHomeState extends State<MyHome> {
     return Scaffold(
       appBar: AppBar(
         title: Image.asset('assets/images/tfl_logo.png'),
-        backgroundColor: Colors.black.withOpacity(0.5),
+        backgroundColor: Colors.black.withValues(alpha: 0.5),
       ),
       body: SafeArea(
         child: Column(
diff --git a/example/pose_estimation/lib/main.dart b/example/pose_estimation/lib/main.dart
index 82336c0..3ded2c3 100644
--- a/example/pose_estimation/lib/main.dart
+++ b/example/pose_estimation/lib/main.dart
@@ -180,7 +180,7 @@ class _MyHomePageState extends State<MyHomePage> with WidgetsBindingObserver {
         title: Center(
           child: Image.asset('assets/images/tfl_logo.png'),
         ),
-        backgroundColor: Colors.black.withOpacity(0.5),
+        backgroundColor: Colors.black.withValues(alpha: 0.5),
       ),
       body: resultWidget(context),
     );
diff --git a/example/style_transfer/lib/main.dart b/example/style_transfer/lib/main.dart
index dbd2ad3..67136cd 100644
--- a/example/style_transfer/lib/main.dart
+++ b/example/style_transfer/lib/main.dart
@@ -291,7 +291,7 @@ class _HomeState extends State<Home> {
     return Scaffold(
       appBar: AppBar(
         title: Image.asset('assets/images/tfl_logo.png'),
-        backgroundColor: Colors.black.withOpacity(0.5),
+        backgroundColor: Colors.black.withValues(alpha: 0.5),
       ),
       body: SafeArea(
         child: Center(
diff --git a/example/super_resolution_esrgan/lib/main.dart b/example/super_resolution_esrgan/lib/main.dart
index 72bb7c3..9964e2d 100644
--- a/example/super_resolution_esrgan/lib/main.dart
+++ b/example/super_resolution_esrgan/lib/main.dart
@@ -181,7 +181,7 @@ class _HomeState extends State<Home> {
     return Scaffold(
       appBar: AppBar(
         title: Image.asset('assets/images/tfl_logo.png'),
-        backgroundColor: Colors.black.withOpacity(0.5),
+        backgroundColor: Colors.black.withValues(alpha: 0.5),
       ),
       body: SafeArea(
         child: Center(