Examine source code of Cloudforce

{
  "theme": {
    "images": {
      "theme_frame": "salesforce-header10.jpg"
    },
    "colors": {
      "frame": "#737373",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Cloudforce",
  "manifest_version": 2,
  "description": "This persona is for attendees of the Cloudforce Tour  - the Cloud Computing event of the year, which is coming to a city near you - www.salesforce.com/cloudforce/"
}