Examine source code of Bubble

{
  "theme": {
    "images": {
      "theme_frame": "personas_b2r_header-Bubble.png"
    },
    "colors": {
      "frame": "#cccccc",
      "tab_background_text": "#cccccc"
    }
  },
  "version": "2.0",
  "name": "Bubble",
  "manifest_version": 2,
  "description": "Thanks of your choice, to match with your favorite Personas you can use a \"CloudBubble\" cursor(CursorFX):\n <a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/46fad97d676c2a89565eae8d67e7fcccd20bf8272909d985bdaad6e097afeac0/http%3A//www.wincustomize.com/skins.aspx%3Fskinid=2539&amp;libid=25\">http://www.wincustomize.com/skins.aspx?skinid=2539&amp;libid=25</a>"
}