Examine source code of Simply Ineffable

{
  "theme": {
    "images": {
      "theme_frame": "c.jpg"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#000"
    }
  },
  "version": "2.0",
  "name": "Simply Ineffable",
  "manifest_version": 2,
  "description": "We needed more Crowley and Aziraphale images from Good Omens. \nTHIS ART IS NOT MINE! It's by the lovely animagass on Deviant art.\n{<a href=\"https://outgoing.prod.mozaws.net/v1/76843adf3ada180c27ecbc07b5ec1fe7cc8215df4e748d54c813d1dec4775352/http%3A//auntslappy282.deviantart.com/favourites/%3Foffset=48%23/d3a11m2\" rel=\"nofollow\">http://auntslappy282.deviantart.com/favourites/?offset=48#/d3a11m2</a>}"
}