Examine source code of WebGlow

{
  "manifest_version": 2,
  "name": "WebGlow",
  "version": "1.0.0",
  "description": "Capture and manage web page light states in a dynamic prism-flow layout.",
  "permissions": [
    "activeTab",
    "storage",
    "clipboardWrite"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_title": "WebGlow"
  },
  "icons": {
    "48": "icon.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{e8588b15-efe4-4843-a4c8-64de119798c4}"
    }
  }
}