Examine source code of zekrom-sky

{
  "name": "Zekrom",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "zekrom.jpg"
    },
    "colors": {
      "frame": "rgba(111, 177, 212, 1)",
      "tab_background_text": "rgba(106, 178, 204, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{a6fe425c-6c34-446a-a8ee-01a051b88d08}"
    }
  }
}