Examine source code of SanBenito

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "SanBenito",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center center"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(186, 152, 152, 0.22)",
      "toolbar_text": "rgb(254, 206, 2)",
      "frame": "rgb(254, 206, 2)",
      "tab_background_text": "rgb(254, 206, 2)",
      "toolbar_field": "rgba(193, 78, 35, 0.35)",
      "toolbar_field_text": "rgba(70, 70, 41, 0.98)",
      "tab_line": "rgb(254, 206, 2)",
      "popup": "rgba(0, 0, 0, 0.8)",
      "popup_text": "rgb(254, 206, 2)",
      "popup_border": "rgb(254, 206, 2)",
      "popup_highlight": "rgb(254, 206, 2)",
      "sidebar_highlight": "rgb(254, 206, 2)",
      "sidebar_text": "rgb(254, 206, 2)",
      "tab_loading": "rgb(254, 206, 2)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{e6eb694c-4c88-4101-bd00-30b5f79718da}"
    }
  }
}