Examine source code of Executive Toy - Animated

{
  "theme": {
    "images": {
      "theme_frame": "FirefoxPersona-BLZ-ExecToy-Perpetual-Anim-header2.png"
    },
    "colors": {
      "frame": "#808080",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Executive Toy - Animated",
  "manifest_version": 2,
  "description": "Executive Toy animation, created with Photoshop and Japng-Editor, \n\n(perpetual motion, Newton's Cradle, Newton's balls, Newton's Third Law, pendulum, action-reaction, conservation of momentum and energy)\n\nTo rate or comment, login here:\n<a href=\"https://addons.mozilla.org/en-US/firefox/addon/executive-toy-animated/#id=222713\" rel=\"nofollow\">https://addons.mozilla.org/en-US/firefox/addon/executive-toy-animated/#id=222713</a> \nSee all my persona designs 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) 2010 BrianZ  All Rights Reserved"
}