Examine source code of Ninja Konoha

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "ninja",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "left bottom"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(246, 246, 246)",
      "toolbar_text": "rgb(92, 92, 92)",
      "frame": "rgb(94, 94, 94)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(214, 214, 214)",
      "toolbar_field_text": "rgb(160, 160, 160)",
      "tab_line": "rgb(137, 137, 137)",
      "popup": "rgb(255, 255, 255)",
      "popup_text": "rgb(119, 119, 119)",
      "tab_loading": "rgb(137, 137, 137)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{18a7a085-6f82-4a6f-81be-03968f99979f}"
    }
  }
}