Examine source code of Halocharts

{
  "theme": {
    "images": {
      "theme_frame": "Persona.jpg"
    },
    "colors": {
      "frame": "#696969",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Halocharts",
  "manifest_version": 2,
  "description": "Halocharts.com is a brilliant website for collecting all your stats and medals, as well as chatting with thousands of members. The site is owned by firestream, I am just a member."
}