Examine source code of OCI Change Console Color

{
  "browser_specific_settings": {
    "gecko": {
      "id": "oci-change-console-color@the-town.jp"
    }
  },
  "manifest_version": 3,
  "name": "OCI Change Console Color",
  "version": "0.1",
  "description": "Oracle Cloud Infrastructure のコンソールの背景色を変更する拡張機能です。",
  "icons": {
    "128": "icons/icon.svg"
  },
  "content_scripts": [
    {
      "matches": [
        "https://cloud.oracle.com/*"
      ],
      "js": [
        "main.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "action": {
    "default_title": "example"
  },
  "permissions": [
    "storage"
  ]
}