Examine source code of St. Georges Day

{
  "theme": {
    "images": {
      "theme_frame": "StGeorgesDayHdr.jpg"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#f70808"
    }
  },
  "version": "2.0",
  "name": "St. Georges Day",
  "manifest_version": 2,
  "description": "A simple St. Georges Persona"
}