Update app.py

app.py

@@ -20,10 +20,10 @@ css = """\
   font-size: 2em;
 }
 .choices-group .wrap label:first-child {
-  background: lightpink;
+  background: #c89834;
 }
 .choices-group .wrap label:last-child {
-  background: lightskyblue;
+  background: #24a6e1;
 }
 textarea {
 font-size: 2em;