Examine source code of Solar panel icon

{
  "manifest_version": 2,
  "name": "Solar panel icon",
  "version": "1.0",
  "description": "The solar panel icon is a popular symbol in topics about clean energy, green technology, and energy saving.",
  "icons": {
    "48": "icon.png"
  },
  "browser_action": {
    "default_icon": "icon.png",
    "default_popup": "popup.html",
    "default_title": "Click me!"
  },
  "permissions": [
    "activeTab"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{6c05da8b-6133-4b4f-9e9a-fdc4bbcf5d50}"
    }
  }
}