Examine source code of exercito_10blog

{
  "theme": {
    "images": {
      "theme_frame": "10blog_firefox.png"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#1aff0a"
    }
  },
  "version": "2.0",
  "name": "exercito_10blog",
  "manifest_version": 2,
  "description": "10º Batalhão Logístico\nMinistério da Defesa\n(Software Livre)\n<a href=\"https://outgoing.prod.mozaws.net/v1/b7af5767eac188ba7da3559c8d03ee561d4d82dea05e5acf44fac557f544de39/http%3A//www.10blog.eb.mil.br\" rel=\"nofollow\">www.10blog.eb.mil.br</a>"
}