Examine source code of Nebulas Sky

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Nebulas Sky",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right center"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(121, 184, 219, 0.1)",
      "toolbar_text": "rgb(211, 55, 253)",
      "frame": "rgb(142, 179, 201)",
      "tab_background_text": "rgb(250, 216, 36)",
      "toolbar_field": "rgba(2, 27, 39, 0.15)",
      "toolbar_field_text": "rgb(122, 12, 250)",
      "tab_line": "rgb(249, 255, 45)",
      "popup": "rgb(77, 106, 255)",
      "popup_text": "rgb(244, 209, 32)",
      "tab_loading": "rgb(249, 255, 45)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{5e620c7a-e7a1-47a8-ad11-9ed1322ac28e}"
    }
  }
}