Examine source code of Golden Palace

{
  "name": "Golden Palace",
  "manifest_version": 2,
  "version": "1.1resigned1",
  "theme": {
    "images": {
      "theme_frame": "Nova Astra.png"
    },
    "colors": {
      "frame": "rgba(0, 0, 0, 1)",
      "tab_background_text": "rgba(255, 255, 255, 0.89)",
      "toolbar": "rgba(0, 0, 0, 0.34)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(0, 0, 0, 0.34)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{038ac042-619b-4a48-9625-ca78b3a3fb4c}"
    }
  }
}