Examine source code of Face Fox Dark

{
  "theme": {
    "images": {
      "theme_frame": "facefox.jpg"
    },
    "colors": {
      "frame": "#dbdbdb",
      "tab_background_text": "#ededed"
    }
  },
  "version": "2.0",
  "name": "Face Fox Dark",
  "manifest_version": 2,
  "description": "My simple, yet cute, rendition of the Firefox logo. On a subtly textured matte black background."
}