Examine source code of Hello there birds

{
  "theme": {
    "images": {
      "theme_frame": "heylookbirds.jpg"
    },
    "colors": {
      "frame": "#949494",
      "tab_background_text": "#545454"
    }
  },
  "version": "2.0",
  "name": "Hello there birds",
  "manifest_version": 2,
  "description": "Picture from <a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/8b0410c1f2a0108e93035b840e25d4cd5de25b2db4b3e6df9489f2fe0669cc30/http%3A//vlastas.deviantart.com/art/Birds-115676229\">http://vlastas.deviantart.com/art/Birds-115676229</a>\n\nFirst Persona :3"
}