Examine source code of The Changing Forest

{
  "theme": {
    "images": {
      "theme_frame": "TheChangingForestHCustom.jpg"
    },
    "colors": {
      "frame": "#333300",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "The Changing Forest",
  "manifest_version": 2,
  "description": "forest, woods, fall, autumn, light, trees, seasons, dark, deep, My wallpaper to match is at: <a href=\"https://outgoing.prod.mozaws.net/v1/8aed34979c43eca69845bbafb6b420ef504195658b4c6989f0ede1c20177353d/http%3A//nature.desktopnexus.com/wallpaper/839629/\" rel=\"nofollow\">http://nature.desktopnexus.com/wallpaper/839629/</a>"
}