Examine source code of Ittoki

{
  "theme": {
    "images": {
      "theme_frame": "IttokiOben.png"
    },
    "colors": {
      "frame": "#211304",
      "tab_background_text": "#2b1a02"
    }
  },
  "version": "2.0",
  "name": "Ittoki",
  "manifest_version": 2,
  "description": "uta no prince-sama maji love 1000"
}