Examine source code of Orange scenery

{
  "theme": {
    "images": {
      "theme_frame": "Narandzasteplanine3.jpg"
    },
    "colors": {
      "frame": "#1f0202",
      "tab_background_text": "#fcae6a"
    }
  },
  "version": "2.0",
  "name": "Orange scenery",
  "manifest_version": 2,
  "description": "Autumn, nature, dark blue sky and clouds, valley and mountains."
}