Examine source code of Trader Stylist

{
  "manifest_version": 2,
  "name": "Trader Stylist",
  "version": "0.2.1resigned1",
  "description": "Simplify the UI of your trading and investing websites",
  "icons": {
    "16": "assets/icons8-clean-16.png",
    "48": "assets/icons8-clean-48.png",
    "128": "assets/icons8-clean-128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.investing.com/economic-calendar/"
      ],
      "css": [
        "investing.com/style.css"
      ],
      "js": [
        "vendor/jquery-3.3.1.min.js",
        "investing.com/contentScript.js"
      ]
    },
    {
      "matches": [
        "https://coinmarketcap.com/*"
      ],
      "css": [
        "coinmarketcap.com/style.css"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{f829dca8-5256-4638-b4e6-0d23e71ddf41}"
    }
  }
}