Examine source code of Media Tools

{
  "theme": {
    "images": {
      "theme_frame": "header.jpg"
    },
    "colors": {
      "frame": "#c2ae8a",
      "tab_background_text": "#0e121c"
    }
  },
  "version": "2.0",
  "name": "Media Tools",
  "manifest_version": 2,
  "description": "<a href=\"https://outgoing.prod.mozaws.net/v1/f636170780166250cb7e576cefec176c5dc491b69ea3afbf0bec3956043fee8a/http%3A//www.mediatools.cl\" rel=\"nofollow\">www.mediatools.cl</a>"
}