Examine source code of MassJwJ

{
  "theme": {
    "images": {
      "theme_frame": "header.jpg"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#000"
    }
  },
  "version": "2.0",
  "name": "MassJwJ",
  "manifest_version": 2,
  "description": "Jobs with Justice is a coalition of labor and community organizations working together to build unity and support for the struggles of working people.\n<a href=\"https://outgoing.prod.mozaws.net/v1/68a95f9e147193ac2a675e98514bb3a1d6ce2060590040d73d18b4e9bf4febd5/http%3A//www.massjwj.net\" rel=\"nofollow\">www.massjwj.net</a>"
}