Examine source code of Custom Galaxy Style

{
  "manifest_version": 3,
  "name": "Custom Galaxy Style",
  "version": "1.0",
  "description": "A Firefox extension to customize the new tab page with a space theme.",
  "permissions": [
    "tabs"
  ],
  "chrome_url_overrides": {
    "newtab": "index.html"
  },
  "icons": {
    "128": "icons/icon128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{eecc26e9-360f-46c6-952f-f2af99e1575a}",
      "strict_min_version": "58.0"
    }
  }
}