change style for disabled button

babylonia_terminal_launcher/lib/screens/setups/steps_screen.dart

@@ -59,9 +59,13 @@ class StepsScreen extends StatelessWidget {
               ),
             ),
           ),
-          SimpleButton(
-            onPressed: () => gameStateProvider.updateGameState(),
-            child: const Text('update'),
+          Padding(
+            padding: const EdgeInsets.only(top: 12.0),
+            child: SimpleButton(
+              onPressed:
+                  true ? null : () => gameStateProvider.updateGameState(),
+              child: const Text('next'),
+            ),
           ),
         ],
       ),

babylonia_terminal_launcher/lib/widgets/simple_button.dart

@@ -1,4 +1,5 @@
 import 'package:flutter/material.dart';
+import 'package:yaru/theme.dart';
 
 class SimpleButton extends StatelessWidget {
   const SimpleButton({super.key, required this.child, required this.onPressed});
@@ -9,7 +10,12 @@ class SimpleButton extends StatelessWidget {
   Widget build(BuildContext context) {
     return ElevatedButton(
       style: ButtonStyle(
-        backgroundColor: MaterialStateProperty.all(Colors.blue[500]),
+        backgroundColor: MaterialStateProperty.resolveWith((states) {
+          if (states.contains(MaterialState.disabled)) {
+            return Colors.grey;
+          }
+          return Colors.blue[500];
+        }),
         side: MaterialStateProperty.all(BorderSide.none),
         shape: MaterialStateProperty.all<RoundedRectangleBorder>(
           RoundedRectangleBorder(

babylonia_terminal_launcher/lib/widgets/steps/proton_steps_widget.dart

@@ -1,7 +1,9 @@
 import 'package:flutter/material.dart';
+import 'package:provider/provider.dart';
 import 'package:yaru/widgets.dart';
 
 import './../../models/github.dart';
+import './../../providers/providers.dart';
 
 class ProtonSteps extends StatefulWidget {
   const ProtonSteps({super.key});