Examine source code of Mac Friendly - Solid

{
  "theme": {
    "images": {
      "theme_frame": "header_2.png"
    },
    "colors": {
      "frame": "#cccccc",
      "tab_background_text": "#666666"
    }
  },
  "version": "2.0",
  "name": "Mac Friendly - Solid",
  "manifest_version": 2,
  "description": "This persona is to make Firefox more friendly to mac users!\nFirefox's default mac theme is not \"Mac\"!"
}