Examine source code of HexColor Color Picker

{
  "manifest_version": 3,
  "name": "HexColor Pro Picker & Palette Builder",
  "version": "1.0.0",
  "description": "Inspect colors, generate shades, check WCAG contrast, and view details on hexcolor.ie",
  "permissions": [
    "activeTab",
    "scripting",
    "storage"
  ],
  "action": {
    "default_popup": "popup.html"
  },
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "addon@hexcolor.ie",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}