Examine source code of S-CSS-P

{
  "name": "S-CSS-P",
  "version": "1.2.0",
  "description": "A stylesheet picker for The SCP Wiki",
  "manifest_version": 2,
  "permissions": [
    "storage",
    "http://scpwiki.com",
    "http://www.scpwiki.com",
    "http://*.scp-wiki.net/",
    "http://scp-wiki.wikidot.com/",
    "https://*.scp-wiki.net/",
    "https://scp-wiki.wikidot.com/",
    "http://scpnet.org/"
  ],
  "applications": {
    "gecko": {
      "id": "s-css-p@o5command.com",
      "strict_min_version": "42.0"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "http://*.scp-wiki.net/*",
        "http://scp-wiki.wikidot.com/*",
        "https://*.scp-wiki.net/*",
        "https://scp-wiki.wikidot.com/*",
        "http://scpnet.org/*",
        "http://scpwiki.com/*",
        "http://www.scpwiki.com/*"
      ],
      "js": [
        "main.js",
        "options.js"
      ],
      "all_frames": true,
      "run_at": "document_end"
    }
  ],
  "web_accessible_resources": [
    "/css/*",
    "/img/*"
  ],
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon128.png"
  }
}