Examine source code of aurora borealisish

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "aurora",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(186, 134, 146, 0.19)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(43, 41, 65)",
      "tab_background_text": "rgb(156, 160, 146)",
      "toolbar_field": "rgb(43, 41, 65)",
      "toolbar_field_text": "rgb(160, 121, 140)",
      "tab_line": "rgb(143, 195, 112)",
      "popup": "rgb(43, 41, 65)",
      "popup_text": "rgb(156, 160, 146)",
      "ntp_background": "rgb(43, 41, 65)",
      "tab_loading": "rgb(143, 195, 112)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{705c53a4-f7bc-45a6-8a77-30174468b242}"
    }
  }
}