diff --git a/example/lib/accessibility/neumorphic_accessibility.dart b/example/lib/accessibility/neumorphic_accessibility.dart
index 15f6223a..b8cbe581 100644
--- a/example/lib/accessibility/neumorphic_accessibility.dart
+++ b/example/lib/accessibility/neumorphic_accessibility.dart
@@ -1,5 +1,4 @@
 import 'package:example/lib/color_selector.dart';
-import 'package:flutter/material.dart';
 import 'package:flutter_neumorphic/flutter_neumorphic.dart';
 
 class NeumorphicAccessibility extends StatefulWidget {
@@ -71,7 +70,7 @@ class __PageState extends State<_Page> {
                   child: RaisedButton(
                     shape: RoundedRectangleBorder(
                         borderRadius: BorderRadius.circular(12)),
-                    color: Theme.of(context).accentColor,
+                    color: Theme.of(context).colorScheme.secondary,
                     child: Text(
                       "back",
                       style: TextStyle(color: Colors.white),
@@ -104,7 +103,7 @@ class __PageState extends State<_Page> {
   int selectedConfiguratorIndex = 0;
 
   Widget _configurators() {
-    final Color buttonActiveColor = Theme.of(context).accentColor;
+    final Color buttonActiveColor = Theme.of(context).colorScheme.secondary;
     final Color buttonInnactiveColor = Colors.white;
 
     final Color textActiveColor = Colors.white;
@@ -513,7 +512,7 @@ class __PageState extends State<_Page> {
   }
 
   Widget shapeWidget() {
-    final Color buttonActiveColor = Theme.of(context).accentColor;
+    final Color buttonActiveColor = Theme.of(context).colorScheme.secondary;
     final Color buttonInnactiveColor = Colors.white;
 
     final Color iconActiveColor = Colors.white;
diff --git a/example/lib/playground/neumorphic_playground.dart b/example/lib/playground/neumorphic_playground.dart
index eb52041c..94846eba 100644
--- a/example/lib/playground/neumorphic_playground.dart
+++ b/example/lib/playground/neumorphic_playground.dart
@@ -71,7 +71,7 @@ class __PageState extends State<_Page> {
               child: RaisedButton(
                 shape: RoundedRectangleBorder(
                     borderRadius: BorderRadius.circular(12)),
-                color: Theme.of(context).accentColor,
+                color: Theme.of(context).colorScheme.secondary,
                 child: Text(
                   "back",
                   style: TextStyle(color: Colors.white),
@@ -102,7 +102,7 @@ class __PageState extends State<_Page> {
   int selectedConfiguratorIndex = 0;
 
   Widget _configurators() {
-    final Color buttonActiveColor = Theme.of(context).accentColor;
+    final Color buttonActiveColor = Theme.of(context).colorScheme.secondary;
     final Color buttonInnactiveColor = Colors.white;
 
     final Color textActiveColor = Colors.white;
@@ -622,7 +622,7 @@ class __PageState extends State<_Page> {
   }
 
   Widget boxshapeWidget() {
-    final Color buttonActiveColor = Theme.of(context).accentColor;
+    final Color buttonActiveColor = Theme.of(context).colorScheme.secondary;
     final Color buttonInnactiveColor = Colors.white;
 
     final Color textActiveColor = Colors.white;
@@ -756,7 +756,7 @@ class __PageState extends State<_Page> {
   }
 
   Widget shapeWidget() {
-    final Color buttonActiveColor = Theme.of(context).accentColor;
+    final Color buttonActiveColor = Theme.of(context).colorScheme.secondary;
     final Color buttonInnactiveColor = Colors.white;
 
     final Color iconActiveColor = Colors.white;
diff --git a/example/lib/playground/text_playground.dart b/example/lib/playground/text_playground.dart
index f1a547cd..dda81e4b 100644
--- a/example/lib/playground/text_playground.dart
+++ b/example/lib/playground/text_playground.dart
@@ -1,5 +1,4 @@
 import 'package:example/lib/color_selector.dart';
-import 'package:flutter/material.dart';
 import 'package:flutter_neumorphic/flutter_neumorphic.dart';
 
 class NeumorphicTextPlayground extends StatefulWidget {
@@ -92,7 +91,7 @@ class __PageState extends State<_Page> {
                   child: RaisedButton(
                     shape: RoundedRectangleBorder(
                         borderRadius: BorderRadius.circular(12)),
-                    color: Theme.of(context).accentColor,
+                    color: Theme.of(context).colorScheme.secondary,
                     child: Text(
                       "back",
                       style: TextStyle(color: Colors.white),
@@ -125,7 +124,7 @@ class __PageState extends State<_Page> {
   int selectedConfiguratorIndex = 0;
 
   Widget _configurators() {
-    final Color buttonActiveColor = Theme.of(context).accentColor;
+    final Color buttonActiveColor = Theme.of(context).colorScheme.secondary;
     final Color buttonInnactiveColor = Colors.white;
 
     final Color textActiveColor = Colors.white;
@@ -238,7 +237,7 @@ class __PageState extends State<_Page> {
   }
 
   Widget shapeWidget() {
-    final Color buttonActiveColor = Theme.of(context).accentColor;
+    final Color buttonActiveColor = Theme.of(context).colorScheme.secondary;
     final Color buttonInnactiveColor = Colors.white;
 
     final Color iconActiveColor = Colors.white;
@@ -444,7 +443,7 @@ class __PageState extends State<_Page> {
   }
 
   FontWeight _fontWeight() {
-    switch ((this.fontWeight / 100).toInt()) {
+    switch (this.fontWeight ~/ 100) {
       case 1:
         return FontWeight.w100;
       case 2:
diff --git a/example/lib/sample_neumorphic_playground.dart b/example/lib/sample_neumorphic_playground.dart
index afb309e7..d5de1e45 100644
--- a/example/lib/sample_neumorphic_playground.dart
+++ b/example/lib/sample_neumorphic_playground.dart
@@ -1,5 +1,3 @@
-import 'package:example/lib/color_selector.dart';
-import 'package:flutter/cupertino.dart';
 import 'package:flutter_neumorphic/flutter_neumorphic.dart';
 
 void main() => runApp(NeumorphicPlayground());
@@ -85,7 +83,7 @@ class __PageState extends State<_Page> {
   }
 
   Widget _configurators() {
-    final Color buttonActiveColor = Theme.of(context).accentColor;
+    final Color buttonActiveColor = Theme.of(context).colorScheme.secondary;
     final Color buttonInnactiveColor = Colors.white;
 
     final Color textActiveColor = Colors.white;
@@ -246,7 +244,7 @@ class __PageState extends State<_Page> {
   }
 
   Widget shapeWidget() {
-    final Color buttonActiveColor = Theme.of(context).accentColor;
+    final Color buttonActiveColor = Theme.of(context).colorScheme.secondary;
     final Color buttonInnactiveColor = Colors.white;
 
     final Color iconActiveColor = Colors.white;
diff --git a/lib/src/widget/app_bar.dart b/lib/src/widget/app_bar.dart
index 75768744..2f4268fa 100644
--- a/lib/src/widget/app_bar.dart
+++ b/lib/src/widget/app_bar.dart
@@ -1,7 +1,4 @@
-import 'package:flutter/material.dart';
-import 'package:flutter/widgets.dart';
 import 'package:flutter_neumorphic/flutter_neumorphic.dart';
-import 'package:flutter_neumorphic/src/widget/back_button.dart';
 
 class NeumorphicAppBar extends StatefulWidget implements PreferredSizeWidget {
   static const toolbarHeight = kToolbarHeight + 16 * 2;
@@ -180,8 +177,8 @@ class NeumorphicAppBarState extends State<NeumorphicAppBar> {
     if (title != null) {
       final AppBarTheme appBarTheme = AppBarTheme.of(context);
       title = DefaultTextStyle(
-        style: (appBarTheme.textTheme?.headline5 ??
-                Theme.of(context).textTheme.headline5!)
+        style: (appBarTheme.titleTextStyle ??
+                Theme.of(context).textTheme.titleMedium!)
             .merge(widget.textStyle ?? nTheme?.current?.appBarTheme.textStyle),
         softWrap: false,
         overflow: TextOverflow.ellipsis,