Examine source code of Represent.Us

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#000"
    }
  },
  "version": "2.0",
  "name": "Represent.Us",
  "manifest_version": 2,
  "description": "<a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/801e2cdffa5aac9cb2bfd8de4076188d19dabc6eef68bfa01dd0054d1aebbcd5/http%3A//Represent.Us\">Represent.Us</a> is a movement that is building a fiercely non-partisan coalition to pass tough anti-corruption laws in cities and states across America, and end the legalized corruption that has come to define modern politics. \nGo to <a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/367ef28ba76a8ba603cd507854a89f8a75f38b0b26c1e5a4e12752a58e0a980c/https%3A//represent.us/\">https://represent.us/</a> to see what you can do."
}