Examine source code of Nord

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Nord",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(59, 66, 82)",
      "toolbar_text": "rgb(229, 233, 240)",
      "frame": "rgb(46, 52, 64)",
      "tab_background_text": "rgb(216, 222, 233)",
      "toolbar_field": "rgb(46, 52, 64)",
      "toolbar_field_text": "rgb(229, 233, 240)",
      "tab_line": "rgb(136, 192, 208)",
      "popup": "rgb(46, 52, 64)",
      "popup_text": "rgb(229, 233, 240)",
      "button_background_active": "rgba(0, 20, 255, 0)",
      "icons": "rgb(229, 233, 240)",
      "ntp_background": "rgb(59, 66, 82)",
      "ntp_text": "rgb(216, 222, 233)",
      "popup_border": "rgb(46, 52, 64)",
      "sidebar_border": "rgba(26, 27, 38, 0)",
      "sidebar_highlight_text": "rgb(136, 192, 208)",
      "sidebar_highlight": "rgb(136, 192, 208)",
      "sidebar_text": "rgb(229, 233, 240)",
      "sidebar": "rgb(59, 66, 82)",
      "toolbar_bottom_separator": "rgb(59, 66, 82)",
      "tab_loading": "rgb(136, 192, 208)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{48899556-1d2f-4de1-8e60-0746fc84c23e}"
    }
  }
}