Examine source code of Arc X Dark

{
  "manifest_version": 2,
  "version": "1.1",
  "name": "ArcX",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(49, 55, 66)",
      "toolbar_text": "rgb(211, 218, 227)",
      "frame": "rgb(32, 36, 44)",
      "tab_background_text": "rgb(190, 196, 204)",
      "toolbar_field": "rgb(55, 61, 72)",
      "toolbar_field_text": "rgb(211, 218, 227)",
      "tab_line": "rgb(82, 148, 226)",
      "popup": "rgb(55, 61, 72)",
      "popup_text": "rgb(211, 218, 227)",
      "ntp_background": "rgb(32, 36, 44)",
      "popup_highlight": "rgb(82, 148, 226)",
      "sidebar_highlight": "rgb(82, 148, 226)",
      "sidebar": "rgb(48, 54, 65)",
      "toolbar_field_highlight": "rgb(82, 148, 226)",
      "tab_loading": "rgb(82, 148, 226)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{fe5c4bbe-6930-485d-b2d6-5efb356f9691}"
    }
  }
}