Examine source code of Ooer Everywhere

{
  "manifest_version": 2,
  "name": "Ooer Everywhere",
  "description": "Bless every page on the Internet with the sleek, modern look of Reddit's /r/Ooer.",
  "version": "1.2.36",
  "author": "garlicOS®",
  "permissions": [
    "activeTab"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "web_accessible_resources": [
    "ooer.css",
    "img/*"
  ],
  "browser_action": {
    "default_icon": "icon/icon48.png"
  },
  "background": {
    "persistent": false,
    "scripts": [
      "background.js"
    ]
  },
  "icons": {
    "16": "icon/icon16.png",
    "32": "icon/icon32.png",
    "48": "icon/icon48.png",
    "64": "icon/icon64.png",
    "128": "icon/icon128.png",
    "256": "icon/icon256.png",
    "512": "icon/icon512.png",
    "1024": "icon/icon1024.png"
  }
}