Examine source code of Prometheus Fox

{
  "theme": {
    "images": {
      "theme_frame": "Prometheusfoxhead.jpg"
    },
    "colors": {
      "frame": "#a6a1a1",
      "tab_background_text": "#57a197"
    }
  },
  "version": "2.0",
  "name": "Prometheus Fox",
  "manifest_version": 2,
  "description": "Design based on the upcoming Ridley Scott movie and of course Mozilla Firefox!\nFull height version.\nAll the best.\nDay."
}