Examine source code of Sand Crab

{
  "theme": {
    "images": {
      "theme_frame": "FirefoxPersona-BLZ-SandCrab-header.jpg"
    },
    "colors": {
      "frame": "#b19578",
      "tab_background_text": "#fdffce"
    }
  },
  "version": "2.0",
  "name": "Sand Crab",
  "manifest_version": 2,
  "description": "a.k.a. Sand fiddler crab (Uca pugilator), a small sand crab by his burrow near Virginia Beach, VA, USA.  \n\nTo rate or comment, login here:\n<a href=\"https://addons.mozilla.org/en-US/firefox/addon/sand-crab/#id=314275\" rel=\"nofollow\">https://addons.mozilla.org/en-US/firefox/addon/sand-crab/#id=314275</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) 2007 BrianZ"
}