Examine source code of 9Tails

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Nine_tails",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-005-f5f3cf677b1f132c75ddc7bd319dd1fc.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(193, 131, 16, 0.85)",
      "toolbar_text": "rgb(120, 29, 137)",
      "frame": "rgb(6, 6, 6)",
      "tab_background_text": "rgb(0, 241, 255)",
      "toolbar_field": "rgba(92, 255, 3, 0.77)",
      "toolbar_field_text": "rgb(179, 12, 211)",
      "tab_line": "rgb(92, 255, 3)",
      "popup": "rgb(6, 6, 6)",
      "popup_text": "rgb(193, 16, 20)",
      "tab_loading": "rgb(92, 255, 3)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{0faea8e6-3f20-4d99-8681-a470e07ec426}"
    }
  }
}