Examine source code of Clouds over Russia

{
  "theme": {
    "images": {
      "theme_frame": "Clouds_over_Russia_top.jpg"
    },
    "colors": {
      "frame": "#c9c9c9",
      "tab_background_text": "#ffffcc"
    }
  },
  "version": "2.0",
  "name": "Clouds over Russia",
  "manifest_version": 2,
  "description": "Based on a summertime photo of clouds in the sky. The photo was taken on the Estonian side of the Estonian-Russian border, the clouds were actually over Russia, hence the name of this persona."
}