Examine source code of Twilight Barn

{
  "theme": {
    "images": {
      "theme_frame": "TwilightBarnH.jpg"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Twilight Barn",
  "manifest_version": 2,
  "description": "mist, fog, sunset, farm, country, rural, sunrise, morning, evening, misty"
}