Examine source code of Diamond Digger

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#e8be6f",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Diamond Digger",
  "manifest_version": 2,
  "description": "<a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/9eb02b309b2a16ff291fafb2e27796ba5218c64b24a54800c23847b595681b72/https%3A//king.com/game/diamonddigger\">https://king.com/game/diamonddigger</a>"
}