Examine source code of Summers Evening

{
  "theme": {
    "images": {
      "theme_frame": "SummerEveningH2.jpg"
    },
    "colors": {
      "frame": "#0f0f0f",
      "tab_background_text": "#faf7f7"
    }
  },
  "version": "2.0",
  "name": "Summers Evening",
  "manifest_version": 2,
  "description": "heron, bird, sunset, sunrise, pond, lake, beach, shore, trees, grass, morning, water, My wallpaper to match can be found at: <a href=\"https://outgoing.prod.mozaws.net/v1/d5c3b9fc67058e68d198ca2c98d5ee69830ea5fc5bf1966bcd3ad7bbde1c373a/http%3A//nature.desktopnexus.com/wallpaper/639663/\" rel=\"nofollow\">http://nature.desktopnexus.com/wallpaper/639663/</a>"
}