diff --git a/Lib/idlelib/NEWS.txt b/Lib/idlelib/NEWS.txt
index 680712e..b54d70d 100644
--- a/Lib/idlelib/NEWS.txt
+++ b/Lib/idlelib/NEWS.txt
@@ -3,6 +3,8 @@
 
 *Release date: XX-XXX-200X*
 
+- Update cursor color without restarting.  Patch 1725576 Tal Einat.
+
 - Allow keyboard interrupt only when user code is executing in subprocess.
   Patch 1225 Tal Einat (reworked from IDLE-Spoon).
 
diff --git a/Lib/idlelib/configDialog.py b/Lib/idlelib/configDialog.py
index d29ede4..98b6b2e 100644
--- a/Lib/idlelib/configDialog.py
+++ b/Lib/idlelib/configDialog.py
@@ -1118,12 +1118,15 @@
     def ActivateConfigChanges(self):
         "Dynamically apply configuration changes"
         winInstances=self.parent.instance_dict.keys()
+        theme = idleConf.CurrentTheme()
+        cursor_color = idleConf.GetHighlight(theme, 'cursor', fgBg='fg')
         for instance in winInstances:
             instance.ResetColorizer()
             instance.ResetFont()
             instance.set_notabs_indentwidth()
             instance.ApplyKeybindings()
             instance.reset_help_menu_entries()
+            instance.text.configure(insertbackground=cursor_color)
 
     def Cancel(self):
         self.destroy()