diff --git a/plantuml/info221-lecture-colours.ipu b/plantuml/info221-lecture-colours.ipu
index a378646..653cfdc 100644
--- a/plantuml/info221-lecture-colours.ipu
+++ b/plantuml/info221-lecture-colours.ipu
@@ -10,14 +10,18 @@
 	}
 	
 	sequence {
-		ParticipantBackgroundColor #F2F2F2
-		LifeLineBackgroundColor #F2F2F2
-		LifeLineBorderColor #515151
-		ArrowColor #515151
-		ParticipantBorderColor #515151
-		ArrowColor #515151
-		FontColor #515151
-		AttributeFontColor #515151
+    	ParticipantBackgroundColor #F2F2F2
+    	ParticipantBorderColor #515151
+    
+    	LifeLineBackgroundColor #F2F2F2
+    	LifeLineBorderColor #515151
+    
+    	ArrowColor #515151
+    
+    	ActorBorderColor #515151
+    	ActorBackgroundColor #F2F2F2
+    
+    	FontColor #FF0000
 	}
 
 }
\ No newline at end of file