Examine source code of MyDallasOnline

{
  "theme": {
    "images": {
      "theme_frame": "headermdo.png"
    },
    "colors": {
      "frame": "#f5f0f0",
      "tab_background_text": "#f7f4f4"
    }
  },
  "version": "2.0",
  "name": "MyDallasOnline",
  "manifest_version": 2,
  "description": "<a href=\"https://outgoing.prod.mozaws.net/v1/74e557964521c664c68a63bb1e4ddf699059e59e467ae2fe53e48f549472606d/http%3A//MydallasOnline.com\" rel=\"nofollow\">MydallasOnline.com</a>"
}