Examine source code of simple purple gray

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "minimal purple gray theme",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(24, 24, 24)",
      "toolbar_text": "rgb(122, 122, 122)",
      "frame": "rgb(10, 10, 10)",
      "tab_background_text": "rgb(114, 8, 171)",
      "toolbar_field": "rgb(36, 36, 36)",
      "toolbar_field_text": "rgb(156, 156, 156)",
      "tab_line": "rgb(114, 8, 171)",
      "popup": "rgb(13, 13, 13)",
      "popup_text": "rgb(114, 8, 171)",
      "ntp_background": "rgb(24, 24, 24)",
      "tab_loading": "rgb(114, 8, 171)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{eb425372-4ce5-450f-92b5-081e5182430c}"
    }
  }
}