Examine source code of Swirls Dark Fox

{
  "theme": {
    "images": {
      "theme_frame": "FirefoxThemeHeaderDarkFox.jpg"
    },
    "colors": {
      "frame": "#d0d1cd",
      "tab_background_text": "#d0d1cd"
    }
  },
  "version": "2.0",
  "name": "Swirls Dark Fox",
  "manifest_version": 2,
  "description": "My first persona. Not a masterpiece but not too shabby. :D Of course, I want to give Firefox credit for their logo that I used."
}