Examine source code of galaxyS (not transparent)

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Skyrim Galaxy",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "left top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(7, 37, 53)",
      "toolbar_text": "rgb(174, 151, 155)",
      "frame": "rgb(142, 179, 201)",
      "tab_background_text": "rgb(148, 152, 227)",
      "toolbar_field": "rgb(17, 54, 75)",
      "toolbar_field_text": "rgb(123, 127, 204)",
      "tab_line": "rgb(176, 79, 99)",
      "popup": "rgb(37, 41, 90)",
      "popup_text": "rgb(174, 151, 155)",
      "tab_loading": "rgb(176, 79, 99)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{c41be4dc-2b49-4685-a923-02cc2166ac04}"
    }
  }
}