Examine source code of Noir

{
  "manifest_version": 2,
  "version": "2.0",
  "name": "Noir",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(20, 20, 20)",
      "toolbar_text": "rgb(207, 207, 207)",
      "frame": "rgb(27, 27, 27)",
      "tab_background_text": "rgb(169, 169, 169)",
      "toolbar_field": "rgb(20, 20, 20)",
      "toolbar_field_text": "rgb(218, 218, 218)",
      "tab_line": "rgba(0, 0, 0, 0)",
      "popup": "rgb(32, 32, 32)",
      "popup_text": "rgb(232, 232, 232)",
      "icons_attention": "rgb(66, 133, 244)",
      "popup_border": "rgba(255, 255, 255, 0)",
      "tab_selected": "rgb(27, 27, 27)",
      "toolbar_field_border_focus": "rgba(60, 60, 60, 0)",
      "toolbar_field_focus": "rgb(32, 32, 32)",
      "tab_loading": "rgba(0, 0, 0, 0)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{0514f47e-cb3f-405b-aef2-fde7aa18f721}"
    }
  }
}