Examine source code of Simple Mavericks

{
  "theme": {
    "images": {
      "theme_frame": "MavericksHeader.png"
    },
    "colors": {
      "frame": "#b3b3b3",
      "tab_background_text": "#212020"
    }
  },
  "version": "2.0",
  "name": "Simple Mavericks",
  "manifest_version": 2,
  "description": "A very simple header with some Mavs flare"
}