Examine source code of Jiji Sleeping

{
  "name": "jiji test",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "jiji3.gif"
    },
    "colors": {
      "frame": "rgba(209, 174, 239, 1)",
      "tab_background_text": "rgba(0, 0, 0, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{bc38552a-2b81-4c2b-adf1-3c91be65b6e3}"
    }
  }
}