Examine source code of enternity.gr

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#487be8",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "enternity.gr",
  "manifest_version": 2,
  "description": "Official firefox theme of <a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/443a48c9927826957cb09f7f52064456806716fdfd79cd47306129fdbfed4f9b/http%3A//www.enternity.gr\">www.enternity.gr</a>"
}