Examine source code of Tundra Sunset

{
  "theme": {
    "images": {
      "theme_frame": "SwitzCrop1.jpg"
    },
    "colors": {
      "frame": "#e8dada",
      "tab_background_text": "#030101"
    }
  },
  "version": "2.0",
  "name": "Tundra Sunset",
  "manifest_version": 2,
  "description": "Sunset over the alpine tundra in Switzerland in July of 2010."
}