✨implement light and dark theme

lib/views/home/home_screen.dart

@@ -2,7 +2,7 @@ import 'package:flutter/material.dart';
 import 'package:tm_app/core/routes/app_routes.dart';
 
 import '../../../core/constants/strings.dart';
-import '../../core/constants/colors.dart';
+import '../../core/theme/colors.dart';
 import '../../core/utils/size_config.dart';
 import 'widgets.dart';
 
@@ -14,7 +14,7 @@ class HomeScreen extends StatelessWidget {
     SizeConfig.init(context);
     return SafeArea(
       child: Scaffold(
-        backgroundColor: Colors.white,
+        backgroundColor: AppColors.backgroundColor,
         body: _body(context),
         appBar: _appbar(),
       ),
@@ -68,7 +68,7 @@ class HomeScreen extends StatelessWidget {
               style: TextStyle(
                 fontSize: 20,
                 fontWeight: FontWeight.bold,
-                color: Color(0xFF222222),
+                color: AppColors.grey70,
               ),
             ),
             Image.asset(
@@ -111,7 +111,7 @@ class HomeScreen extends StatelessWidget {
       mainAxisAlignment: MainAxisAlignment.spaceBetween,
       children: [
         StatisticsCard(
-          backgroundColor: Color(0xFFE5EFFF),
+          backgroundColor: AppColors.primary20,
           iconPath: 'assets/icons/arrows.svg',
           title: AppStrings.tenderSubmitting,
           amount: '12',
@@ -168,7 +168,7 @@ class HomeScreen extends StatelessWidget {
       style: TextStyle(
         fontSize: 20.0.sp(),
         fontWeight: FontWeight.w600,
-        color: Color(0xFF777777),
+        color: AppColors.grey60,
       ),
     );
   }