Examine source code of viCompte Default Style

{
  "theme": {
    "images": {
      "theme_frame": "top.jpg"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#000"
    }
  },
  "version": "2.0",
  "name": "viCompte Default Style",
  "manifest_version": 2,
  "description": "viO ;) - logo style :p <a href=\"https://outgoing.prod.mozaws.net/v1/754117032293bbfa68d20c2b5e79cc3baa797610a1680a1d00d26e8b21859dc7/http%3A//www.vionline.fr\" rel=\"nofollow\">http://www.vionline.fr</a>"
}