Examine source code of Tricky Chaos Kit

{
  "manifest_version": 2,
  "name": "Tricky Chaos Kit",
  "description": "Make web less distracting with a key. Press F2 to switch to dark mode anywhere or to enable custom style in certain places. IDDQD.",
  "version": "2.5.1",
  "author": "Ryan Ash",
  "icons": {
    "16": "icons/16_off.png",
    "32": "icons/32_off.png",
    "48": "icons/48_off.png",
    "128": "icons/128_off.png"
  },
  "browser_action": {
    "default_icon": {
      "16": "icons/16_off.png",
      "32": "icons/32_off.png",
      "48": "icons/48_off.png",
      "128": "icons/128_off.png"
    }
  },
  "background": {
    "persistent": false,
    "scripts": [
      "js/background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://trello.com/*"
      ],
      "css": [
        "css/font-awesome.min.css",
        "css/trello.css"
      ],
      "js": [
        "js/jquery-3.2.1.min.js",
        "js/jquery.enhanced.cookie.js",
        "js/purge.js",
        "js/trello-addons.js"
      ]
    },
    {
      "matches": [
        "https://youtube.com/*",
        "https://www.youtube.com/*"
      ],
      "css": [
        "css/youtube.css"
      ],
      "js": [
        "js/jquery-3.2.1.min.js",
        "js/jquery.enhanced.cookie.js",
        "js/purge.js",
        "js/youtube-addons.js"
      ]
    },
    {
      "matches": [
        "https://keep.google.com/*"
      ],
      "css": [
        "css/keep.css"
      ],
      "js": [
        "js/jquery-3.2.1.min.js",
        "js/jquery.enhanced.cookie.js",
        "js/purge.js"
      ]
    },
    {
      "matches": [
        "https://pornhub.com/*",
        "https://*.pornhub.com/*"
      ],
      "css": [
        "css/font-awesome.min.css",
        "css/ph.css"
      ],
      "js": [
        "js/jquery-3.2.1.min.js",
        "js/jquery.enhanced.cookie.js",
        "js/purge.js"
      ]
    },
    {
      "matches": [
        "https://pastebin.com/*",
        "https://*.pastebin.com/*"
      ],
      "css": [
        "css/font-awesome.min.css",
        "css/pastebin.css",
        "css/quill.bubble.css"
      ],
      "js": [
        "js/jquery-3.2.1.min.js",
        "js/jquery.enhanced.cookie.js",
        "js/text-template.js",
        "js/text-template-markup.js",
        "js/quill.min.js"
      ]
    },
    {
      "matches": [
        "<all_urls>"
      ],
      "exclude_matches": [
        "https://trello.com/*",
        "https://youtube.com/*",
        "https://www.youtube.com/*",
        "https://keep.google.com/*",
        "https://pornhub.com/*",
        "https://*.pornhub.com/*",
        "https://pastebin.com/*"
      ],
      "css": [
        "css/invert.css"
      ],
      "js": [
        "js/jquery-3.2.1.min.js",
        "js/jquery.enhanced.cookie.js",
        "js/purge.js"
      ]
    }
  ],
  "web_accessible_resources": [
    "fonts/fontawesome-webfont.eot",
    "fonts/fontawesome-webfont.svg",
    "fonts/fontawesome-webfont.ttf",
    "fonts/fontawesome-webfont.woff",
    "fonts/fontawesome-webfont.woff2",
    "fonts/FontAwesome.otf"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{e923998a-490a-4f65-9cc5-f5f1104bf2c8}"
    }
  }
}