Examine source code of Berlin - Lustgarten

{
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    "images": {
      "theme_frame": "Lustgarten_1.jpg"
    },
    "colors": {
      "frame": "#8c8c8c",
      "tab_background_text": "#2e429e"
    }
  },
  "version": "2.0",
  "name": "Berlin - Lustgarten",
  "manifest_version": 2,
  "description": "Germany, Berlin, Lustgarten"
}