Examine source code of Botswana

{
  "theme": {
    "images": {
      "theme_frame": "header3.jpg"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Botswana",
  "manifest_version": 2,
  "description": "Botswana is a beautiful country located in the southern part of Africa. It is the most peaceful country one can visit."
}