Examine source code of Cologne Skyline

{
  "theme": {
    "images": {
      "theme_frame": "skyline-wandtattoo-ml105-koeln-500px-horz.jpg"
    },
    "colors": {
      "frame": "#ff0000",
      "tab_background_text": "#fc0000"
    }
  },
  "version": "2.0",
  "name": "Cologne Skyline",
  "manifest_version": 2,
  "description": "The Skyline of Cologne as a persona !"
}