Examine source code of TheLiver

{
  "theme": {
    "images": {
      "theme_frame": "LiverFirefox.jpg"
    },
    "colors": {
      "frame": "#17075e",
      "tab_background_text": "#003442"
    }
  },
  "version": "2.0",
  "name": "TheLiver",
  "manifest_version": 2,
  "description": "Had a transplant. Doing very well. Wanted to raise awareness."
}