Examine source code of Nixie-Pro-Labs

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#535c5c",
      "tab_background_text": "#eceff4"
    }
  },
  "version": "2.0",
  "name": "Nixie-Pro-Labs",
  "manifest_version": 2,
  "description": "Theme to match my GTK and Openbox theme inspired by this amazing screenshot\n\n<a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/54481108378c6dcb60f1a374bb079e256dc5a0aabf9f5da442f36b7e758d0dc4/http%3A//fav.me/da44ozb\">http://fav.me/da44ozb</a>"
}