Examine source code of rubin kazan

{
  "theme": {
    "images": {
      "theme_frame": "rubin_kazan_logo2.jpg"
    },
    "colors": {
      "frame": "#0a2b03",
      "tab_background_text": "#f7f7f7"
    }
  },
  "version": "2.0",
  "name": "rubin kazan",
  "manifest_version": 2,
  "description": "for fans of Rubin - Kazan!"
}