Examine source code of Game Eat Sleep

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#444444",
      "tab_background_text": "#FFFFFF"
    }
  },
  "version": "2.0",
  "name": "Game Eat Sleep",
  "manifest_version": 2,
  "description": "Wallpaper for <a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/9eb59249825b57a82358a584a12b0086fd47146c5b1496db86b0e7d1023da7a3/http%3A//GameEatSleep.com.au\">GameEatSleep.com.au</a>"
}