Examine source code of Windows Live Messenger

{
  "manifest_version" : 2 ,
  "version" : "1.0",
  "name" : "Windows Live Messenger",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center top"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(131, 202, 238, 0.24)",
      "toolbar_text": "rgb(41, 83, 111)",
      "frame": "rgb(255, 255, 255)",
      "tab_background_text": "rgb(114, 120, 124)",
      "toolbar_field": "rgba(255, 255, 255, 0.74)",
      "toolbar_field_text": "rgb(0, 0, 0)",
      "tab_line": "rgb(255, 255, 255)",
      "popup": "rgba(255, 255, 255, 0.85)",
      "popup_text": "rgb(41, 83, 111)",
      "tab_loading": "rgb(255, 255, 255)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{087dca3e-b524-45d3-9c10-a2348ccdbf83}"
    }
  }
}