Examine source code of inStereo

{
  "theme": {
    "images": {
      "theme_frame": "header.jpg"
    },
    "colors": {
      "frame": "#e8e8e8",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "inStereo",
  "manifest_version": 2,
  "description": "Useful dark abstract persona for developers (light firebug window)"
}