Examine source code of Colorful Lines

{
  "theme": {
    "images": {
      "theme_frame": "Colorful-Header.jpg"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Colorful Lines",
  "manifest_version": 2,
  "description": "Matching wallpaper here <a href=\"https://outgoing.prod.mozaws.net/v1/c80b5f486ceecb39c561c39637334173cf0b141f7180a41faf3f0efc65f3dcf2/http%3A//wallpaperswide.com/colorful_arrows-wallpapers.html\" rel=\"nofollow\">http://wallpaperswide.com/colorful_arrows-wallpapers.html</a>"
}