Examine source code of Door Miku

{
  "theme": {
    "images": {
      "theme_frame": "fx-topbar2.png"
    },
    "colors": {
      "frame": "#7697d6",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Door Miku",
  "manifest_version": 2,
  "description": "This is my fan-art of Hatsune Miku.\nThe Original Illustlation is here : <a href=\"https://outgoing.prod.mozaws.net/v1/3dee953177fd221ef0761931a2ec620de40415c95a8c1b25c5a9cf1caa20052c/http%3A//f.hatena.ne.jp/Akkiesoft/20100122022108\" rel=\"nofollow\">http://f.hatena.ne.jp/Akkiesoft/20100122022108</a> ; \nAbout Hatsune Miku : <a href=\"https://outgoing.prod.mozaws.net/v1/58ba03dfbcfc9ea27c12df600d1d540b2c31cffec368a08d264155d3c0847aae/http%3A//en.wikipedia.org/wiki/Vocaloid%23Hatsune_Miku\" rel=\"nofollow\">http://en.wikipedia.org/wiki/Vocaloid#Hatsune_Miku</a>"
}