Fix uYou's appearance not updating if the app is backgrounded

Sources/uYouPlusPatches.h

@@ -25,3 +25,23 @@
 // @interface YTAppDelegate ()
 // @property(nonatomic, strong) id downloadsVC;
 // @end
+
+// Fix uYou's appearance not updating if the app is backgrounded
+@interface DownloadsPagerVC : UIViewController
+- (NSArray<UIViewController *> *)viewControllers;
+- (void)updatePageStyles;
+@end
+@interface DownloadingVC : UIViewController
+- (void)updatePageStyles;
+- (UITableView *)tableView;
+@end
+@interface DownloadingCell : UITableViewCell
+- (void)updatePageStyles;
+@end
+@interface DownloadedVC : UIViewController
+- (void)updatePageStyles;
+- (UITableView *)tableView;
+@end
+@interface DownloadedCell : UITableViewCell
+- (void)updatePageStyles;
+@end

Sources/uYouPlusPatches.xm

@@ -102,6 +102,38 @@
 }
 %end
 
+// Fix uYou's appearance not updating if the app is backgrounded
+DownloadsPagerVC *downloadsPagerVC;
+static void refreshUYouAppearance() {
+    if (!downloadsPagerVC) return;
+    [downloadsPagerVC updatePageStyles];
+    for (UIViewController *vc in [downloadsPagerVC viewControllers]) {
+        if ([vc isKindOfClass:%c(DownloadingVC)]) {
+            [(DownloadingVC *)vc updatePageStyles];
+            for (UITableViewCell *cell in [(DownloadingVC *)vc tableView].visibleCells)
+                if ([cell isKindOfClass:%c(DownloadingCell)])
+                    [(DownloadingCell *)cell updatePageStyles];
+        } else if ([vc isKindOfClass:%c(DownloadedVC)]) {
+            [(DownloadedVC *)vc updatePageStyles];
+            for (UITableViewCell *cell in [(DownloadedVC *)vc tableView].visibleCells)
+                if ([cell isKindOfClass:%c(DownloadedCell)])
+                    [(DownloadedCell *)cell updatePageStyles];
+        }
+    }
+}
+%hook DownloadsPagerVC
+- (instancetype)init {
+    downloadsPagerVC = %orig;
+    return downloadsPagerVC;
+}
+%end
+%hook UIViewController
+- (void)traitCollectionDidChange:(UITraitCollection *)previousTraitCollection {
+    %orig;
+    refreshUYouAppearance();
+}
+%end
+
 %ctor {
     %init;
     if (@available(iOS 16, *)) {