Examine source code of Orang Bits

{
  "theme": {
    "images": {
      "theme_frame": "orangeh.png"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#7b1a00"
    }
  },
  "version": "2.0",
  "name": "Orang Bits",
  "manifest_version": 2,
  "description": "<a href=\"https://outgoing.prod.mozaws.net/v1/e9b4a8564d8b77f0ecdf8cfa4ac2b7ed034dfc15f12b958998c431d59c20defc/http%3A//www.colourlovers.com/pattern/501568/orange_bits\" rel=\"nofollow\">http://www.colourlovers.com/pattern/501568/orange_bits</a>"
}