Examine source code of Warm Breezy Day

{
  "theme": {
    "images": {
      "theme_frame": "warmbreezyday.jpg"
    },
    "colors": {
      "frame": "#011a09",
      "tab_background_text": "#cac9e0"
    }
  },
  "version": "2.0",
  "name": "Warm Breezy Day",
  "manifest_version": 2,
  "description": "vector graphics, hills, grass, birds, clouds, sun"
}