Examine source code of Skyrim Dark

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Skyrim Dark",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(0, 0, 0)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(0, 0, 0)",
      "tab_background_text": "rgb(143, 143, 143)",
      "toolbar_field": "rgb(0, 0, 0)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(35, 205, 179)",
      "popup": "rgb(0, 0, 0)",
      "popup_text": "rgb(180, 180, 180)",
      "ntp_background": "rgb(0, 0, 0)",
      "tab_text": "rgb(204, 230, 218)",
      "tab_loading": "rgb(35, 205, 179)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{ac1f260a-fe21-46ca-87e4-26227d8deff5}"
    }
  }
}