Examine source code of Nordic Night

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Nordic Night",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(79, 85, 96)",
      "toolbar_text": "rgb(234, 237, 237)",
      "frame": "rgb(47, 52, 63)",
      "tab_background_text": "rgb(81, 107, 126)",
      "toolbar_field": "rgb(47, 52, 63)",
      "toolbar_field_text": "rgb(234, 237, 237)",
      "tab_line": "rgb(47, 52, 63)",
      "popup": "rgb(79, 85, 96)",
      "popup_text": "rgb(234, 237, 237)",
      "popup_border": "rgb(79, 85, 96)",
      "toolbar_bottom_separator": "rgb(47, 52, 63)",
      "toolbar_field_border": "rgb(33, 33, 33)",
      "toolbar_field_highlight_text": "rgb(79, 85, 96)",
      "toolbar_field_text_focus": "rgb(234, 237, 237)",
      "toolbar_top_separator": "rgb(47, 52, 63)",
      "tab_loading": "rgb(47, 52, 63)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{cecb885a-60ea-46fd-a4bc-38d773685e68}"
    }
  }
}