Examine source code of Underwater Feeling

{
  "theme": {
    "images": {
      "theme_frame": "casting_shadows_h.jpg"
    },
    "colors": {
      "frame": "#bab4b4",
      "tab_background_text": "#faf2f2"
    }
  },
  "version": "2.0",
  "name": "Underwater Feeling",
  "manifest_version": 2,
  "description": "The persona is created using one of my own photos: <a href=\"https://outgoing.prod.mozaws.net/v1/5e5330569b5452260938c142cb53d3fd324fab0c2c106fa8e677fcb19a2cd2d1/http%3A//drugge.deviantart.com/art/Casting-Shadows-153565811\" rel=\"nofollow\">http://drugge.deviantart.com/art/Casting-Shadows-153565811</a>"
}