1 files changed, 29 insertions, 0 deletions
diff --git a/src/Ryujinx/UI/Windows/MainWindow.axaml.cs b/src/Ryujinx/UI/Windows/MainWindow.axaml.cs
index b1b7a485..7de8a49a 100644
--- a/src/Ryujinx/UI/Windows/MainWindow.axaml.cs
+++ b/src/Ryujinx/UI/Windows/MainWindow.axaml.cs
@@ -2,6 +2,7 @@ using Avalonia;
 using Avalonia.Controls;
 using Avalonia.Controls.Primitives;
 using Avalonia.Interactivity;
+using Avalonia.Platform;
 using Avalonia.Threading;
 using FluentAvalonia.UI.Controls;
 using Ryujinx.Ava.Common;
@@ -92,6 +93,29 @@ namespace Ryujinx.Ava.UI.Windows
             }
         }
 
+        /// <summary>
+        /// Event handler for detecting OS theme change when using "Follow OS theme" option
+        /// </summary>
+        private void OnPlatformColorValuesChanged(object sender, PlatformColorValues e)
+        {
+            if (Application.Current is App app)
+            {
+                app.ApplyConfiguredTheme();
+            }
+        }
+
+        protected override void OnClosed(EventArgs e)
+        {
+            base.OnClosed(e);
+            if (PlatformSettings != null)
+            {
+                /// <summary>
+                /// Unsubscribe to the ColorValuesChanged event
+                /// </summary>
+                PlatformSettings.ColorValuesChanged -= OnPlatformColorValuesChanged;
+            }
+        }
+
         protected override void OnApplyTemplate(TemplateAppliedEventArgs e)
         {
             base.OnApplyTemplate(e);
@@ -390,6 +414,11 @@ namespace Ryujinx.Ava.UI.Windows
 
             Initialize();
 
+            /// <summary>
+            /// Subscribe to the ColorValuesChanged event
+            /// </summary>
+            PlatformSettings.ColorValuesChanged += OnPlatformColorValuesChanged;
+
             ViewModel.Initialize(
                 ContentManager,
                 StorageProvider,