Examine source code of AWS Console Color

{
  "name": "AWS Navbar Region Color",
  "version": "1.2.0",
  "description": "Change AWS's navbar color depending on the region",
  "manifest_version": 2,
  "browser_action": {
    "default_title": "Options",
    "default_popup": "popup.html"
  },
  "icons": {
    "128": "icon.png"
  },
  "permissions": [
    "storage",
    "*://*.console.aws.amazon.com/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://*.console.aws.amazon.com/*"
      ],
      "js": [
        "main.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{684a5510-25c6-4df8-b1d3-c75ecad953fd}"
    }
  }
}