Examine source code of Violet Violets

{
  "theme": {
    "images": {
      "theme_frame": "violetVioletsHCustom.jpg"
    },
    "colors": {
      "frame": "#050505",
      "tab_background_text": "#030303"
    }
  },
  "version": "2.0",
  "name": "Violet Violets",
  "manifest_version": 2,
  "description": "violet, lavender, purple, butterfly, summer, spring, My matching wallpaper can be found at: <a href=\"https://outgoing.prod.mozaws.net/v1/619c4b82d1313e9ce6a4fed5943d02844acddbf3470ba4edcff26e72a737308e/http%3A//nature.desktopnexus.com/wallpaper/639682/\" rel=\"nofollow\">http://nature.desktopnexus.com/wallpaper/639682/</a>"
}