Examine source code of SnowTrex

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#f6f6f6",
      "tab_background_text": "#333333"
    }
  },
  "version": "2.0",
  "name": "SnowTrex",
  "manifest_version": 2,
  "description": "SnowTrex is your specialist for ski holidays. In just a few years, thanks to its unbeatable offers for ski deals, the company has risen to become one of Europe's largest speciality tour operators for winter sport holidays."
}