Examine source code of Armagetron2

{
  "theme": {
    "images": {
      "theme_frame": "persona.jpg"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#f4ff54"
    }
  },
  "version": "2.0",
  "name": "Armagetron2",
  "manifest_version": 2,
  "description": "<a href=\"https://outgoing.prod.mozaws.net/v1/22055b14936017564ebd4deb088f197bff211ba01536d42b75e469871609f78a/http%3A//www.armagetronad.net\" rel=\"nofollow\">www.armagetronad.net</a>\nArmagetron is a free multiplayer game based on the lightcycle sequence from the 1982 movie TRON"
}