Examine source code of Royal Design

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#2e1010"
    }
  },
  "version": "2.0",
  "name": "Royal Design",
  "manifest_version": 2,
  "description": "Royal Design theme By Rajnikant Kumbhar,India.\nImage Courtesy : <a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/975ef686a72603dc23ae2ccb4a685eee8fbec4adede0e19c143f4b7ad99385fa/http%3A//www.bradbury.com\">http://www.bradbury.com</a>"
}