diff --git a/Examples/OneSignalDemo/app/build.gradle b/Examples/OneSignalDemo/app/build.gradle
index b516efdad8..4586129d61 100644
--- a/Examples/OneSignalDemo/app/build.gradle
+++ b/Examples/OneSignalDemo/app/build.gradle
@@ -1,5 +1,6 @@
 plugins {
     id 'com.android.application'
+    id 'kotlin-android'
 }
 
 android {
diff --git a/Examples/OneSignalDemo/app/src/main/java/com/onesignal/sdktest/notification/NotificationServiceExtension.java b/Examples/OneSignalDemo/app/src/main/java/com/onesignal/sdktest/notification/NotificationServiceExtension.java
deleted file mode 100644
index 6f1c603da5..0000000000
--- a/Examples/OneSignalDemo/app/src/main/java/com/onesignal/sdktest/notification/NotificationServiceExtension.java
+++ /dev/null
@@ -1,28 +0,0 @@
-package com.onesignal.sdktest.notification;
-
-import android.util.Log;
-
-import com.onesignal.notifications.IActionButton;
-import com.onesignal.notifications.IDisplayableMutableNotification;
-import com.onesignal.notifications.INotificationReceivedEvent;
-import com.onesignal.notifications.INotificationServiceExtension;
-import com.onesignal.sdktest.R;
-import com.onesignal.sdktest.constant.Tag;
-
-public class NotificationServiceExtension implements INotificationServiceExtension {
-
-   @Override
-   public void onNotificationReceived(INotificationReceivedEvent event) {
-      Log.v(Tag.LOG_TAG, "IRemoteNotificationReceivedHandler fired" + " with INotificationReceivedEvent: " + event.toString());
-
-      IDisplayableMutableNotification notification = event.getNotification();
-
-      if (notification.getActionButtons() != null) {
-         for (IActionButton button : notification.getActionButtons()) {
-            Log.v(Tag.LOG_TAG, "ActionButton: " + button.toString());
-         }
-      }
-
-      notification.setExtender(builder -> builder.setColor(event.getContext().getResources().getColor(R.color.colorPrimary)));
-   }
-}
diff --git a/Examples/OneSignalDemo/app/src/main/java/com/onesignal/sdktest/notification/NotificationServiceExtension.kt b/Examples/OneSignalDemo/app/src/main/java/com/onesignal/sdktest/notification/NotificationServiceExtension.kt
new file mode 100644
index 0000000000..a20f32ff89
--- /dev/null
+++ b/Examples/OneSignalDemo/app/src/main/java/com/onesignal/sdktest/notification/NotificationServiceExtension.kt
@@ -0,0 +1,33 @@
+package com.onesignal.sdktest.notification
+
+import android.graphics.Color
+import android.util.Log
+import androidx.core.app.NotificationCompat
+import com.onesignal.notifications.INotificationReceivedEvent
+import com.onesignal.notifications.INotificationServiceExtension
+import com.onesignal.sdktest.R
+import com.onesignal.sdktest.constant.Tag
+
+class NotificationServiceExtension : INotificationServiceExtension {
+    override fun onNotificationReceived(event: INotificationReceivedEvent) {
+        Log.v(
+            Tag.LOG_TAG,
+            "IRemoteNotificationReceivedHandler fired with INotificationReceivedEvent: $event"
+        )
+
+        val notification = event.notification
+
+        if (notification.actionButtons != null) {
+            for (button in notification.actionButtons!!) {
+                Log.v(
+                    Tag.LOG_TAG,
+                    "ActionButton: $button"
+                )
+            }
+        }
+
+        notification.setExtender { builder: NotificationCompat.Builder ->
+            builder.setColor(Color.GREEN)
+        }
+    }
+}
diff --git a/OneSignalSDK/onesignal/notifications/src/main/java/com/onesignal/notifications/internal/common/NotificationGenerationJob.kt b/OneSignalSDK/onesignal/notifications/src/main/java/com/onesignal/notifications/internal/common/NotificationGenerationJob.kt
index 71f3ccc1d2..8249f321e1 100644
--- a/OneSignalSDK/onesignal/notifications/src/main/java/com/onesignal/notifications/internal/common/NotificationGenerationJob.kt
+++ b/OneSignalSDK/onesignal/notifications/src/main/java/com/onesignal/notifications/internal/common/NotificationGenerationJob.kt
@@ -27,8 +27,10 @@ class NotificationGenerationJob(
     var overriddenTitleFromExtender: CharSequence? = null
     var overriddenSound: Uri? = null
     var overriddenFlags: Int? = null
+    var overriddenColor: Int? = null
     var orgFlags: Int? = null
     var orgSound: Uri? = null
+    var orgColor: Int? = null
 
     constructor(jsonPayload: JSONObject, time: ITime) : this(
         Notification(jsonPayload, time),
@@ -73,8 +75,10 @@ class NotificationGenerationJob(
             ", overriddenTitleFromExtender=" + overriddenTitleFromExtender +
             ", overriddenSound=" + overriddenSound +
             ", overriddenFlags=" + overriddenFlags +
+            ", overriddenColor=" + overriddenColor +
             ", orgFlags=" + orgFlags +
             ", orgSound=" + orgSound +
+            ", orgColor=" + orgColor +
             ", notification=" + notification +
             '}'
     }
diff --git a/OneSignalSDK/onesignal/notifications/src/main/java/com/onesignal/notifications/internal/display/impl/NotificationDisplayer.kt b/OneSignalSDK/onesignal/notifications/src/main/java/com/onesignal/notifications/internal/display/impl/NotificationDisplayer.kt
index fe24d9e765..84573131a3 100644
--- a/OneSignalSDK/onesignal/notifications/src/main/java/com/onesignal/notifications/internal/display/impl/NotificationDisplayer.kt
+++ b/OneSignalSDK/onesignal/notifications/src/main/java/com/onesignal/notifications/internal/display/impl/NotificationDisplayer.kt
@@ -202,6 +202,8 @@ internal class NotificationDisplayer(
             var mNotification = mNotificationField[notificationBuilder] as Notification
             notificationJob.orgFlags = mNotification.flags
             notificationJob.orgSound = mNotification.sound
+            notificationJob.orgColor = mNotification.color
+
             notificationBuilder!!.extend(notificationJob.notification!!.notificationExtender!!)
             mNotification = mNotificationField[notificationBuilder] as Notification
             val mContentTextField =
@@ -214,6 +216,15 @@ internal class NotificationDisplayer(
             val mContentTitle = mContentTitleField[notificationBuilder] as CharSequence?
             notificationJob.overriddenBodyFromExtender = mContentText
             notificationJob.overriddenTitleFromExtender = mContentTitle
+
+            val mColor =
+                NotificationCompat.Builder::class.java.getDeclaredField("mColor")
+            mColor.isAccessible = true
+            val color = mColor[notificationBuilder] as Int?
+            if (color != notificationJob.orgColor) {
+                notificationJob.overriddenColor = color
+            }
+
             if (!notificationJob.isRestoring) {
                 notificationJob.overriddenFlags = mNotification.flags
                 notificationJob.overriddenSound = mNotification.sound
diff --git a/OneSignalSDK/onesignal/notifications/src/main/java/com/onesignal/notifications/internal/display/impl/SummaryNotificationDisplayer.kt b/OneSignalSDK/onesignal/notifications/src/main/java/com/onesignal/notifications/internal/display/impl/SummaryNotificationDisplayer.kt
index 807844e94d..9c96530169 100644
--- a/OneSignalSDK/onesignal/notifications/src/main/java/com/onesignal/notifications/internal/display/impl/SummaryNotificationDisplayer.kt
+++ b/OneSignalSDK/onesignal/notifications/src/main/java/com/onesignal/notifications/internal/display/impl/SummaryNotificationDisplayer.kt
@@ -217,6 +217,13 @@ internal class SummaryNotificationDisplayer(
             for (line in summaryList) inboxStyle.addLine(line)
             inboxStyle.setBigContentTitle(summaryMessage)
             summaryBuilder.setStyle(inboxStyle)
+
+            if (notificationJob.overriddenColor != null) {
+                summaryBuilder.setColor(
+                    notificationJob.overriddenColor!!,
+                )
+            }
+
             summaryNotification = summaryBuilder.build()
         } else {
             // First notification with this group key, post like a normal notification.
@@ -244,6 +251,13 @@ internal class SummaryNotificationDisplayer(
             } catch (t: Throwable) {
                 // do nothing in this case...Android support lib 26 isn't in the project
             }
+
+            if (notificationJob.overriddenColor != null) {
+                summaryBuilder.setColor(
+                    notificationJob.overriddenColor!!,
+                )
+            }
+
             summaryNotification = summaryBuilder.build()
             _notificationDisplayBuilder.addXiaomiSettings(notifBuilder, summaryNotification)
         }
@@ -282,6 +296,11 @@ internal class SummaryNotificationDisplayer(
                 notificationJob.overriddenFlags!!,
             )
         }
+        if (notificationJob.overriddenColor != null) {
+            summaryBuilder!!.setColor(
+                notificationJob.overriddenColor!!,
+            )
+        }
 
         // The summary is designed to fit all notifications.
         //   Default small and large icons are used instead of the payload options to enforce this.