diff --git ui/color/color_provider_manager.cc ui/color/color_provider_manager.cc
index a0933fab35037..7a381e24a8816 100644
--- ui/color/color_provider_manager.cc
+++ ui/color/color_provider_manager.cc
@@ -46,6 +46,15 @@ std::optional<GlobalManager>& GetGlobalManager() {
 
 }  // namespace
 
+void ColorProviderManager::AddObserver(ColorProviderManagerObserver* observer) {
+  observers_.AddObserver(observer);
+}
+
+void ColorProviderManager::RemoveObserver(
+    ColorProviderManagerObserver* observer) {
+  observers_.RemoveObserver(observer);
+}
+
 ColorProviderManager::ColorProviderManager() {
   ResetColorProviderInitializerList();
 }
@@ -86,8 +95,19 @@ void ColorProviderManager::ResetColorProviderInitializerList() {
 }
 
 void ColorProviderManager::ResetColorProviderCache() {
-  if (!color_providers_.empty())
+  if (!color_providers_.empty()) {
     color_providers_.clear();
+
+    for (ColorProviderManagerObserver& observer : observers_) {
+      observer.OnColorProviderCacheReset();
+    }
+  }
+}
+
+void ColorProviderManager::AfterNativeThemeUpdated() {
+  for (ColorProviderManagerObserver& observer : observers_) {
+    observer.OnAfterNativeThemeUpdated();
+  }
 }
 
 void ColorProviderManager::AppendColorProviderInitializer(
diff --git ui/color/color_provider_manager.h ui/color/color_provider_manager.h
index 67341dd5fc3d6..ee70de7f7fd44 100644
--- ui/color/color_provider_manager.h
+++ ui/color/color_provider_manager.h
@@ -15,6 +15,7 @@
 #include "base/containers/flat_map.h"
 #include "base/functional/callback.h"
 #include "base/memory/weak_ptr.h"
+#include "base/observer_list.h"
 #include "third_party/skia/include/core/SkColor.h"
 #include "ui/color/color_provider_key.h"
 #include "ui/color/system_theme.h"
@@ -24,6 +25,19 @@ namespace ui {
 
 class ColorProvider;
 
+// Observers which are notified when the color provider manager changes.
+class COMPONENT_EXPORT(COLOR) ColorProviderManagerObserver {
+ public:
+  // Called when the color provider cache is reset.
+  virtual void OnColorProviderCacheReset() {}
+
+  // Called after NativeTheme sends OnNativeThemeUpdated notifications.
+  virtual void OnAfterNativeThemeUpdated() {}
+
+ protected:
+  virtual ~ColorProviderManagerObserver() = default;
+};
+
 // Manages and provides color providers.
 //
 // In most cases, use ColorProviderManager::Get() to obtain an instance to the
@@ -48,6 +62,9 @@ class COMPONENT_EXPORT(COLOR) ColorProviderManager {
   // Clears the ColorProviders stored in `color_providers_`.
   void ResetColorProviderCache();
 
+  // Called after NativeTheme sends OnNativeThemeUpdated notifications.
+  void AfterNativeThemeUpdated();
+
   // Appends `initializer` to the end of the current `initializer_list_`.
   void AppendColorProviderInitializer(
       ColorProviderInitializerList::CallbackType Initializer);
@@ -59,6 +76,10 @@ class COMPONENT_EXPORT(COLOR) ColorProviderManager {
     return num_providers_initialized_;
   }
 
+  // Add or remove observers.
+  void AddObserver(ColorProviderManagerObserver* observer);
+  void RemoveObserver(ColorProviderManagerObserver* observer);
+
  protected:
   ColorProviderManager();
   virtual ~ColorProviderManager();
@@ -76,6 +97,9 @@ class COMPONENT_EXPORT(COLOR) ColorProviderManager {
   // Tracks the number of ColorProviders constructed and initialized by the
   // manager for metrics purposes.
   size_t num_providers_initialized_ = 0;
+
+  base::ObserverList<ColorProviderManagerObserver>::UncheckedAndDanglingUntriaged
+      observers_;
 };
 
 }  // namespace ui