Little colour change on the body background

static/js/main.js

@@ -176,6 +176,7 @@ const play = () => {
   })
 
   socket.on('all_stop', () => {
+    channel.disconnect(pingpong)
     noise.stop()
   })
 

static/js/modules/instruments/plucksynth.js

@@ -1,5 +1,5 @@
 export const plucksynth = new Tone.PluckSynth({
-  volume : -3,
+  volume : 3,
   attackNoise : 1,
   resonance : 0.9
 })

templates/index.html

@@ -17,6 +17,7 @@
         align-items: center;
         justify-content: center;
         flex-direction: column;
+        background : #a9a9a9;
       }
 
       body div {