Examine source code of Electrified

{
  "theme": {
    "images": {
      "theme_frame": "FirefoxPersona-BLZ-Fractal-Electric-header.jpg"
    },
    "colors": {
      "frame": "#808080",
      "tab_background_text": "#cfaef5"
    }
  },
  "version": "2.0",
  "name": "Electrified",
  "manifest_version": 2,
  "description": "fractal art\n\nTo rate or comment, login here:\n<a href=\"https://addons.mozilla.org/en-US/firefox/addon/electrified/#id=175728\" rel=\"nofollow\">https://addons.mozilla.org/en-US/firefox/addon/electrified/#id=175728</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"
}