Examine source code of Dark Rose Garden

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Dark Rose Garden",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right center"
      ],
      "additional_backgrounds_tiling": [
        "repeat-x"
      ]
    },
    "colors": {
      "toolbar": "rgb(54, 52, 64)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(8, 11, 33)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(206, 206, 214)",
      "toolbar_field_text": "rgb(0, 0, 0)",
      "tab_line": "rgb(168, 25, 15)",
      "popup": "rgb(168, 25, 15)",
      "popup_text": "rgb(255, 255, 255)",
      "icons": "rgb(255, 10, 0)",
      "popup_border": "rgb(255, 10, 0)",
      "tab_loading": "rgb(168, 25, 15)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{7b3efeb3-39fc-43fb-ba33-0066f3de109e}"
    }
  }
}