Examine source code of Contagion Game

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#2e2e2e",
      "tab_background_text": "#e0e0e0"
    }
  },
  "version": "2.0",
  "name": "Contagion Game",
  "manifest_version": 2,
  "description": "This is the official Contagion Firefox mini-theme, created using original assets from the game <a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/4d20302a9fb098f51d0983d67d52d89d083744311c5532d2e9af7d678fbb5df8/http%3A//www.contagion-game.com/\">http://www.contagion-game.com/</a>\nGet the Game on Steam: <a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/11bc622d3b1b47fade6fbd8a5ba902040a403c992b4d3e42cddc36f4356c6599/http%3A//store.steampowered.com/app/238430/\">http://store.steampowered.com/app/238430/</a>\nAll rights reserved to Monochrome Incorporated."
}