Examine source code of Chain Bridge at Twilight

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#226ad6",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Chain Bridge at Twilight",
  "manifest_version": 2,
  "description": "The Széchenyi Chain Bridge is a suspension bridge that spans the River Danube between Buda and Pest, the western and eastern sides of Budapest, the capital of Hungary."
}