add back rgb ear instructions

index.html

@@ -43,6 +43,16 @@
             }
           }
         }
+
+        .muted {
+          color: #ebebeb;
+        }
+
+        @media (prefers-color-scheme: dark) {
+          .muted {
+            color: #2b2b2b;
+          }
+        }
       }
     </style>
   </head>
@@ -60,5 +70,10 @@
         </a>
       </ul>
     </main>
+    <footer>
+      <a href="./rgb-ears-39c3.html" class="muted">
+        RGB-Catear instructions are still available ^-^
+      </a>
+    </footer>
   </body>
 </html>