Examine source code of USL Soccer Ball

{
  "theme": {
    "images": {
      "theme_frame": "FirefoxPersona-BLZ-USL-SoccerBall-header.jpg"
    },
    "colors": {
      "frame": "#0a360a",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "USL Soccer Ball",
  "manifest_version": 2,
  "description": "USL Soccer Ball (pro soccer, futbol)  \n\nTo rate or comment, login here:\n<a href=\"https://addons.mozilla.org/en-US/firefox/addon/usl-soccer-ball/#id=322170\" rel=\"nofollow\">https://addons.mozilla.org/en-US/firefox/addon/usl-soccer-ball/#id=322170</a> \nSee all my personas here:\n<a href=\"https://addons.mozilla.org/en-US/firefox/collections/BrianZ/personas/\" rel=\"nofollow\">https://addons.mozilla.org/en-US/firefox/collections/BrianZ/personas/</a> \n\n(c) 2009 BrianZ"
}