Examine source code of Korg Kp3

{
  "theme": {
    "images": {
      "theme_frame": "KorgKp3Skin.png"
    },
    "colors": {
      "frame": "#2b2b2b",
      "tab_background_text": "#cfcfcf"
    }
  },
  "version": "2.0",
  "name": "Korg Kp3",
  "manifest_version": 2,
  "description": "Skin that makes your browser look like the effector we all know and love, the KP3!"
}