merge: 合并下拉刷新主色文案修正

test/core/app_pull_to_refresh_test.dart

@@ -4,6 +4,7 @@ import 'dart:async';
 
 import 'package:flutter/material.dart';
 import 'package:flutter_test/flutter_test.dart';
+import 'package:fruitshorts/core/theme/app_colors.dart';
 import 'package:fruitshorts/core/widgets/app_pull_to_refresh.dart';
 import 'package:fruitshorts/l10n/app_localizations.dart';
 
@@ -43,14 +44,26 @@ void main() {
       );
       expect(scrollable.position.pixels, lessThan(0));
       expect(find.text('Pull to refresh'), findsOneWidget);
+      expect(
+        tester.widget<Text>(find.text('Pull to refresh')).style?.color,
+        AppColors.blue,
+      );
 
       await gesture.moveBy(const Offset(0, 120));
       await tester.pump();
       expect(find.text('Release to refresh'), findsOneWidget);
+      expect(
+        tester.widget<Text>(find.text('Release to refresh')).style?.color,
+        AppColors.blue,
+      );
 
       await gesture.up();
       await tester.pump();
       expect(find.text('Refreshing…'), findsOneWidget);
+      expect(
+        tester.widget<Text>(find.text('Refreshing…')).style?.color,
+        AppColors.blue,
+      );
       expect(calls, 1);
 
       final duplicate = await tester.startGesture(