Examine source code of Cardcaptor Sakura

{
  "theme": {
    "images": {
      "theme_frame": "Cardcaptor_Sakura_Top.jpg"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Cardcaptor Sakura",
  "manifest_version": 2,
  "description": "Sakura from the Anime and Manga Cardcaptor Sakura (Cardcaptors in North American Markets)"
}