Examine source code of knockoutmagazine.cz

{
  "theme": {
    "images": {
      "theme_frame": "Mozila.jpg"
    },
    "colors": {
      "frame": "#faf7f7",
      "tab_background_text": "#f00e0e"
    }
  },
  "version": "2.0",
  "name": "knockoutmagazine.cz",
  "manifest_version": 2,
  "description": "Magazín nejen o bojovích sportech"
}