moreDerps.js

    sendMessage: function (clientInfo, roomId, msg, opts, card){
      opts = (opts && opts.options) || {};
      return request(clientInfo, {
        method: 'POST',
        resource: '/room/' + roomId + '/notification',
        body: {
          message: msg,
          message_format: (opts.format ? opts.format : 'html'),
          color: (opts.color ? opts.color : 'yellow'),
          notify: (opts.notify ? opts.notify : false),
          card: card
        }
      });
    },

// How do I reference the color in line 9?
hipchat.sendMessage(req.clientInfo, req.identity.roomId, "The color of the pen is red", (color = 'green'));