Examine source code of Blend In

{
  "name": "Blend In",
  "description": "__MSG_extDescription__",
  "manifest_version": 2,
  "version": "80.0.1autoversioning",
  "version_name": "80-auto-versioning",
  "homepage_url": "https://addons.mozilla.org/en-US/firefox/addon/blend-in/",
  "default_locale": "en_US",
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "storage",
    "<all_urls>"
  ],
  "applications": {
    "gecko": {
      "id": "{0aa26703-f666-467e-bbcb-0201dc49725c}",
      "strict_min_version": "57.0a1"
    }
  },
  "background": {
    "scripts": [
      "chrome/content/common/logging/Logger.js",
      "components/BlendInObserver.js",
      "components/BlendInObserverInstance.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "chrome/content/common/logging/Logger.js",
        "components/BlendInObserver.js",
        "chrome/content/ContentHandler.js"
      ],
      "run_at": "document_start",
      "all_frames": true
    }
  ],
  "options_ui": {
    "page": "data/blended-in.html",
    "browser_style": true
  },
  "browser_action": {
    "default_title": "Blend In",
    "default_popup": "data/blended-in.html",
    "browser_style": true
  }
}