Examine source code of FFVII CloudSquall

{
  "theme": {
    "images": {
      "theme_frame": "FirefoxPersona78II.jpg"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "FFVII CloudSquall",
  "manifest_version": 2,
  "description": "I'm creating this just for a fd's sake and to have fun. The base picture is from a talented japanese CGer. If you don't like what you see, it's not my problem. It's a free world, please be tolerant. xo"
}