Examine source code of Ubuntu Ambiance Basic

{
  "theme": {
    "images": {
      "theme_frame": "Header.jpg"
    },
    "colors": {
      "frame": "#f0ebe2",
      "tab_background_text": "#dfd8c8"
    }
  },
  "version": "2.0",
  "name": "Ubuntu Ambiance Basic",
  "manifest_version": 2,
  "description": "Very very simple persona to integrate with Ambiance theme in Ubuntu 10.04+"
}