Examine source code of Witchcraft Works-Winter

{
  "theme": {
    "images": {
      "theme_frame": "hc_037-Kopie-Kopie-horz1.jpg"
    },
    "colors": {
      "frame": "#fcfcfc",
      "tab_background_text": "#fcf7f7"
    }
  },
  "version": "2.0",
  "name": "Witchcraft Works-Winter",
  "manifest_version": 2,
  "description": "Manga\nWitchcraft Works\nKagari Ayaka"
}