Examine source code of Zapdos

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#000"
    }
  },
  "version": "2.0",
  "name": "Zapdos",
  "manifest_version": 2,
  "description": "Zapdos theme for Thunderbird to compliment Arcanine Theme (<a rel=\"nofollow\" href=\"https://addons.mozilla.org/en-US/firefox/addon/pokemon-arcanine-persona/\">https://addons.mozilla.org/en-US/firefox/addon/pokemon-arcanine-persona/</a>) for Firefox.\n\nImage credit to Xous54 (<a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/0ba5a72ec9d2f471c24736d7f6efb1ee302e63dd759439d9f2ccc33be17b172b/http%3A//xous54.deviantart.com/art/Zapdos-134727785\">http://xous54.deviantart.com/art/Zapdos-134727785</a>)"
}