Examine source code of One Piece Mafia

{
  "theme": {
    "images": {
      "theme_frame": "OnePieceWoodishLookHeading.jpg"
    },
    "colors": {
      "frame": "#757575",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "One Piece Mafia",
  "manifest_version": 2,
  "description": "One Piece Mafia white with woodish background look anime with Luffy Zoro Sanji Chopper Bones Franky"
}