Pass Redis credentials into createClient.

lib/transports/redis/remote.js

   // Prefix all keys to avoid collisions
   var prefix = "audiogram:";
 
-  var client = redis.createClient({ host: host });
+  var client = redis.createClient({ host: host, password: process.env.REDIS_PASSWORD });
 
   client.on("error", function(err) {
     throw err;

settings/themes.json

     "captionRight": 1080
   },
   "NYT Light": {
-    "width": 1280,
-    "height": 320,
+    "width": 1000,
+    "height": 560,
     "pattern": "halfbars",
     "waveLeft": 20,
     "waveColor": "#d9d9d9",