diff --git a/EduNetworkBuilder/ListBoxWindow.cs b/EduNetworkBuilder/ListBoxWindow.cs
index d25df83..f10dffb 100644
--- a/EduNetworkBuilder/ListBoxWindow.cs
+++ b/EduNetworkBuilder/ListBoxWindow.cs
@@ -534,15 +534,19 @@ namespace EduNetworkBuilder
                         if (oursettings.HasReplay(TheName))
                         {
                             //myWin.Activate();
+                            FormColorForTesting();
                             myWin.replayNetwork(TheName, 1);
                             //Return back to the listbox window
                             Visible = true;
                             Activate();
+                            FormColorBackToNormal();
                         }
                         else
                         {
                             if (lbWindowData.SelectedItem != null)
+                            {
                                 NB.LoadNetworkFromResource(TheName);
+                            }
                         }
                     }
                 }
@@ -550,6 +554,22 @@ namespace EduNetworkBuilder
             else Close();
         }
 
+        private void FormColorForTesting()
+        {
+            this.BackColor = Color.GreenYellow;
+            Application.DoEvents();
+        }
+        private void FormColorBackToNormal()
+        {
+            this.BackColor = SystemColors.Control;
+            Application.DoEvents();
+        }
+        private void FormColorContinuingLoop()
+        {
+            this.BackColor = Color.DarkGray;
+            Application.DoEvents();
+        }
+
         /// <summary>
         /// The checkmark was changed.  Tally up everything
         /// </summary>
@@ -693,15 +713,18 @@ namespace EduNetworkBuilder
                         if (myWin != null)
                         {
                             //myWin.Activate();
+                            FormColorForTesting();
                             myWin.replayNetwork(OnePuzzle, 1);
                             //Return back to the listbox window
                             Visible = true;
                             Activate();
+                            FormColorContinuingLoop();
                         }
                         break;
                     }
                 }
             }
+            FormColorBackToNormal();
         }