Examine source code of Spyklong Stamp

{
  "theme": {
    "images": {
      "theme_frame": "Spyklong_Persona_header.jpg"
    },
    "colors": {
      "frame": "#d1ebe9",
      "tab_background_text": "#4f190a"
    }
  },
  "version": "2.0",
  "name": "Spyklong Stamp",
  "manifest_version": 2,
  "description": "for <a href=\"https://outgoing.prod.mozaws.net/v1/ad72012df05bf756f7103467287bee41aceae278d2cc5962506e93ddac77847e/http%3A//spyklong.com\" rel=\"nofollow\">spyklong.com</a>'s Members"
}