diff --git a/index.html b/index.html
index 5b43b31..39dddd8 100644
--- a/index.html
+++ b/index.html
@@ -124,7 +124,10 @@
 	};
 
 	socket.onclose = event => {
-		console.log("WebSocket closed", event.data);
+        document.body.style.backgroundColor = "gray";
+        document.getElementById("send").style.backgroundColor = "gray";
+        document.getElementById("send").style.filter = "grayscale(100%)";
+        console.log("WebSocket closed", event.data);
 	};
 
 	document.getElementById("send").onclick = function () {