diff --git a/lib/common/colo_extension.dart b/lib/common/colo_extension.dart
index aeb52ae..2b5dcde 100644
--- a/lib/common/colo_extension.dart
+++ b/lib/common/colo_extension.dart
@@ -1,11 +1,11 @@
 import 'package:flutter/material.dart';
 
 class TColor {
-  static Color get primaryColor1 => Color(0xffF09932);
-  static Color get primaryColor2 => Color(0xffFFDCB2);
+  static Color get primaryColor1 => const Color(0xffF09932);
+  static Color get primaryColor2 => const Color(0xffFFDCB2);
 
-  static Color get secondaryColor1 => Color(0xff6131AD);
-  static Color get secondaryColor2 => Color(0xffD4B9FF);
+  static Color get secondaryColor1 => const Color(0xff6131AD);
+  static Color get secondaryColor2 => const Color(0xffD4B9FF);
 
   static List<Color> get primaryG => [primaryColor2, primaryColor1];
   static List<Color> get secondaryG => [secondaryColor2, secondaryColor1];
diff --git a/lib/common_widget/graph/graph.dart b/lib/common_widget/graph/graph.dart
index ee34f2f..b09aca3 100644
--- a/lib/common_widget/graph/graph.dart
+++ b/lib/common_widget/graph/graph.dart
@@ -127,7 +127,7 @@ class GraphPainter extends CustomPainter {
       ..style = PaintingStyle.fill;
 
     Paint dotOutlinePaint = Paint()
-      ..color = ui.Color.fromARGB(255, 236, 236, 236).withAlpha(200)
+      ..color = const ui.Color.fromARGB(255, 236, 236, 236).withAlpha(200)
       ..strokeWidth = 8;
 
     Paint dotCenter = Paint()