Examine source code of Dramatic Clouds

{
  "theme": {
    "images": {
      "theme_frame": "dc_head.jpg"
    },
    "colors": {
      "frame": "#c7c7c7",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Dramatic Clouds",
  "manifest_version": 2,
  "description": "Very dramatic clouds taken straight from the sky, and turned into a work of abstract art.  Vaguely oriental in design."
}