Examine source code of Turquoise Fade

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#5f6a7d"
    }
  },
  "version": "2.0",
  "name": "Turquoise Fade",
  "manifest_version": 2,
  "description": "Nice greenish-blue bg with a soft white fade overlay.\n\nI was looking for mellow colors to use to differentiate between different open FF profile windows and couldn't find anything solid, light and unobtrusive. So I made these.  Hope you like them.\n\nIf you want to see more of my vector graphic work, check out <a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/a92b5c4fbc5897ec0144e0c271fbfb2e2416127a6f6b156731873393746b9e7b/http%3A//botaday.com\">botaday.com</a>"
}