refactor. color map for pokemon card

lib/constants/color.dart

@@ -1,25 +1,27 @@
 import 'package:flutter/material.dart';
+import 'package:pokedex_tracker/util/color_extension.dart';
 
 const Color primaryColor = Colors.red;
 const Color appBarTextColor = Colors.white;
 const Color unselectedTabColor = Color(0xFFFAD54F);
 const Color displayTextColor = Colors.black;
-const Map<String, Color> typesColor = {
-  "Grass": Colors.greenAccent,
-  "Water": Colors.blueAccent,
-  "Fire": Colors.orangeAccent,
-  "Normal": Colors.grey,
-  "Flying": Colors.lightBlueAccent,
-  "Bug": Colors.lightGreenAccent,
-  "Poison": Colors.deepPurpleAccent,
-  "Electric": Colors.amberAccent,
-  "Fighting": Colors.brown,
-  "Rock": Color(0xFFBD8C7A),
-  "Ground": Color(0xFF5F1800),
-  "Fairy": Colors.pinkAccent,
-  "Psychic": Colors.purpleAccent,
-  "Dark": Colors.black54,
-  "Steel": Colors.blueGrey,
-  "Dragon": Color(0xFF252FF9),
-  "Ice": Colors.blue
+Map<String, Color> typesColor = {
+  "Grass": '#82C274'.hexToColor(),
+  "Water": '#74ACF5'.hexToColor(),
+  "Fire": '#EF7374'.hexToColor(),
+  "Normal": "#C1C2C1".hexToColor(),
+  "Flying": '#ADD2F5'.hexToColor(),
+  "Bug": '#B8C26A'.hexToColor(),
+  "Poison": "#B884DD".hexToColor(),
+  "Electric": '#FCD659'.hexToColor(),
+  "Fighting": '#FFAC59'.hexToColor(),
+  "Rock": '#CBC7AD'.hexToColor(),
+  "Ground": '#B88E6F'.hexToColor(),
+  "Fairy": '#F5A2F5'.hexToColor(),
+  "Psychic": '#F584A8'.hexToColor(),
+  "Dark": '#998B8C'.hexToColor(),
+  "Steel": '#98C2D1'.hexToColor(),
+  "Dragon": "#8D98EC".hexToColor(),
+  "Ice": '#81DFF7'.hexToColor(),
+  "Ghost": "#A284A2".hexToColor()
 };

lib/util/color_extension.dart

@@ -0,0 +1,15 @@
+import 'package:flutter/material.dart';
+
+extension ColorExtension on String {
+  Color hexToColor() {
+    final buffer = StringBuffer();
+
+    if(length == 6 || length == 7) {
+      buffer.write('ff');
+    }
+
+    buffer.write(replaceFirst('#', ''));
+
+    return Color(int.parse(buffer.toString(), radix: 16));
+  }
+}