start minimal

lib/theme/app_theme.dart

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+import 'package:flutter/material.dart';
+import 'package:rogapp/theme/pallete.dart';
+
+class AppTheme {
+  static ThemeData theme = ThemeData.light(useMaterial3: true).copyWith(
+    scaffoldBackgroundColor: Pallete.WHITE_COLOR,
+    primaryColor: Pallete.BLUE_COLOR,
+    secondaryHeaderColor: Pallete.GREEN_COLOR,
+    appBarTheme: const AppBarTheme(
+      color: Pallete.BACKGROUND_COLOR,
+      elevation: 0
+    ),
+    floatingActionButtonTheme: const FloatingActionButtonThemeData(
+      backgroundColor: Pallete.BLUE_COLOR
+    ),
+  );
+}