Examine source code of FTP

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "FTP",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right bottom"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(224, 226, 229)",
      "toolbar_text": "rgb(46, 74, 39)",
      "frame": "rgb(54, 180, 117)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(193, 211, 202)",
      "toolbar_field_text": "rgb(46, 74, 39)",
      "tab_line": "rgba(248, 112, 140, 0)",
      "popup": "rgb(215, 212, 212)",
      "popup_text": "rgb(46, 74, 39)",
      "tab_loading": "rgba(248, 112, 140, 0)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{82fc340d-84c0-453c-b7d4-68b5767d74f8}"
    }
  }
}