Examine source code of Panorama Lienen

{
  "name": "Panorama Lienen",
  "manifest_version": 2,
  "version": "5.0",
  "theme": {
    "images": {
      "theme_frame": "Lienen-Panorama.jpg"
    },
    "colors": {
      "frame": "rgba(153, 204, 255, 0)",
      "tab_background_text": "rgba(82, 71, 81, 0.99)",
      "bookmark_text": "rgba(82, 71, 81, 1)",
      "toolbar_field": "rgba(247, 247, 247, 1)"
    }
  }
}