Examine source code of Werewolves

{
  "theme": {
    "images": {
      "theme_frame": "werewolvesheader.jpg"
    },
    "colors": {
      "frame": "#454545",
      "tab_background_text": "#757575"
    }
  },
  "version": "2.0",
  "name": "Werewolves",
  "manifest_version": 2,
  "description": "Four werewolves together with a black werewolf adorned with chains in the back ground and a moon overhead."
}