Examine source code of plage biarritz

{
  "theme": {
    "images": {
      "theme_frame": "plageheader.jpg"
    },
    "colors": {
      "frame": "#635e5e",
      "tab_background_text": "#fafafa"
    }
  },
  "version": "2.0",
  "name": "plage biarritz",
  "manifest_version": 2,
  "description": "vive Biarritz et ses plages merveilleuses.\nmerci de diffuser. D'autres viendront"
}