Examine source code of Radioactive 117

{
  "theme": {
    "images": {
      "theme_frame": "Firefoxpersonaheader-117radioactivity.jpg"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Radioactive 117",
  "manifest_version": 2,
  "description": "A awesome orange theme with a radioactivity symbol."
}