Examine source code of pelplum-tracker

{
  "theme": {
    "images": {
      "theme_frame": "haut.PNG"
    },
    "colors": {
      "frame": "#4a323a",
      "tab_background_text": "#ed155d"
    }
  },
  "version": "2.0",
  "name": "pelplum-tracker",
  "manifest_version": 2,
  "description": "Jeu organise par <a href=\"https://outgoing.prod.mozaws.net/v1/cba268ddfa415fbf6ed95e4248793ca9a25f33d4803266d52a2a4906a6849fdd/http%3A//peplum-tracker.com\" rel=\"nofollow\">peplum-tracker.com</a>"
}