Examine source code of Shwatsonlock 2

{
  "theme": {
    "images": {
      "theme_frame": "here.jpg"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Shwatsonlock 2",
  "manifest_version": 2,
  "description": "\"Always at your side\" Detective Sherlock Holmes Doctor John Watson Slash Shwatsonlock Gay Yaoi Robert Downey Jr Jude Law\nArtist: ShadowCat2503 (DeviantArt)\n\n<a href=\"https://outgoing.prod.mozaws.net/v1/acee2a326293cd481a4e8130025f5f94135340ee05ffddc7d82b74c728ef2d7a/http%3A//shadowcat2503.deviantart.com/art/Holmes-Watson-After-the-fight-151723836\" rel=\"nofollow\">http://shadowcat2503.deviantart.com/art/Holmes-Watson-After-the-fight-151723836</a>"
}