Examine source code of PA Trolley

{
  "theme": {
    "images": {
      "theme_frame": "Smallpersona.jpg"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#e8cb48"
    }
  },
  "version": "2.0",
  "name": "PA Trolley",
  "manifest_version": 2,
  "description": "Pittsburgh PCC Streetcar 1138 preserved at the PA Trolley Museum, a non-profit organization dedicated to preserving the trolley era for future generations."
}