Examine source code of Halocharts.com

{
  "theme": {
    "images": {
      "theme_frame": "Persona-v4.jpg"
    },
    "colors": {
      "frame": "#005700",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Halocharts.com",
  "manifest_version": 2,
  "description": "Second version of the Halocharts Persona. Had some image problems witht the first. All HC users please report all feedback back to Smyf"
}