Examine source code of jon-hudson.net

{
  "theme": {
    "images": {
      "theme_frame": "headerjhpersona.jpg"
    },
    "colors": {
      "frame": "#f2f2f2",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "jon-hudson.net",
  "manifest_version": 2,
  "description": "persona for my website, share it and pass it around, get my name out there.i can create anything you need for web or print."
}