Examine source code of Belle Epoque

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#c7ba82",
      "tab_background_text": "#542222"
    }
  },
  "version": "2.0",
  "name": "Belle Epoque",
  "manifest_version": 2,
  "description": "A small trip back to the Belle Époque and Le Fin de Siècle.\n\nTHE IMAGE USED ON THIS THEME IS NOT MY PROPERTY, It is a property of Gilles Beloeil (<a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/2ca490ea7af172d5af53f36eb5fd4fba921c850298dc17b2028eb69c5cc96154/http%3A//gillesbeloeil.deviantart.com/\">http://gillesbeloeil.deviantart.com/</a>) and Ubisoft Montreal. This theme is for entertainment purposes only."
}