Examine source code of yuko to sakura

{
  "theme": {
    "images": {
      "theme_frame": "yukotosakura.jpg"
    },
    "colors": {
      "frame": "#1937a6",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "yuko to sakura",
  "manifest_version": 2,
  "description": "xxxholic CLAMP japan anime tsubasa reservoir chronicle sakura kinomoto yuko ichihara japanese"
}