Examine source code of MZ-tracker

{
  "theme": {
    "images": {
      "theme_frame": "FFhead.jpg"
    },
    "colors": {
      "frame": "#242323",
      "tab_background_text": "#faf7f7"
    }
  },
  "version": "2.0",
  "name": "MZ-tracker",
  "manifest_version": 2,
  "description": "The best torrent tracker in the world!"
}