Examine source code of thundars firefox theme

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#000"
    }
  },
  "version": "2.0",
  "name": "thundars firefox theme",
  "manifest_version": 2,
  "description": "this is thundar from youtube--&gt;<a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/fc1a36e2446f296757989b7b14ff5a39927aea3a89ad70d6438175523ecd7e64/https%3A//www.youtube.com/channel/UCnG0_-nndcvANTOLgBojggA\">https://www.youtube.com/channel/UCnG0_-nndcvANTOLgBojggA</a> firefox theme"
}