Examine source code of DarkFirefox

{
  "theme": {
    "images": {
      "theme_frame": "Personas02.png"
    },
    "colors": {
      "frame": "#080808",
      "tab_background_text": "#170a69"
    }
  },
  "version": "2.0",
  "name": "DarkFirefox",
  "manifest_version": 2,
  "description": "My second creation ;-)!"
}