chore: Adjust styles and animations

lib/pages/settings_style/settings_style.dart

@@ -2,7 +2,6 @@ import 'package:flutter/material.dart';
 
 import 'package:file_picker/file_picker.dart';
 
-import 'package:fluffychat/config/app_config.dart';
 import 'package:fluffychat/config/setting_keys.dart';
 import 'package:fluffychat/utils/account_config.dart';
 import 'package:fluffychat/utils/file_selector.dart';
@@ -111,32 +110,6 @@ class SettingsStyleController extends State<SettingsStyle> {
   ThemeMode get currentTheme => ThemeController.of(context).themeMode;
   Color? get currentColor => ThemeController.of(context).primaryColor;
 
-  static final List<Color?> customColors = [
-    null,
-    AppConfig.chatColor,
-    Colors.indigo,
-    Colors.blue,
-    Colors.blueAccent,
-    Colors.teal,
-    Colors.tealAccent,
-    Colors.green,
-    Colors.greenAccent,
-    Colors.yellow,
-    Colors.yellowAccent,
-    Colors.orange,
-    Colors.orangeAccent,
-    Colors.red,
-    Colors.redAccent,
-    Colors.pink,
-    Colors.pinkAccent,
-    Colors.purple,
-    Colors.purpleAccent,
-    Colors.blueGrey,
-    Colors.grey,
-    Colors.white,
-    Colors.black,
-  ];
-
   void switchTheme(ThemeMode? newTheme) {
     if (newTheme == null) return;
     switch (newTheme) {

lib/pages/settings_style/settings_style_view.dart

@@ -82,14 +82,13 @@ class SettingsStyleView extends StatelessWidget {
                     Theme.of(context).brightness == Brightness.light
                     ? light?.primary
                     : dark?.primary;
-                final colors = List<Color?>.from(
-                  SettingsStyleController.customColors,
-                );
+                final colors = [null, AppConfig.chatColor, ...Colors.primaries];
                 if (systemColor == null) {
                   colors.remove(null);
                 }
                 return GridView.builder(
                   shrinkWrap: true,
+                  physics: NeverScrollableScrollPhysics(),
                   gridDelegate: const SliverGridDelegateWithMaxCrossAxisExtent(
                     maxCrossAxisExtent: 64,
                   ),