Examine source code of Mountain Mist Escape

{
  "manifest_version": 2,
  "name": "Mountain Mist Escape",
  "version": "1.0",
  "description": "Fatures a serene, misty mountain valley scene with a cozy wooden cabin.",
  "icons": {
    "128": "icon.png"
  },
  "chrome_url_overrides": {
    "newtab": "newtab.html"
  },
  "browser_action": {
    "default_popup": "newtab.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{bfcff6a4-d986-4c56-a3b4-976aff69e4fa}"
    }
  }
}