Examine source code of Joomla CMS Blue

{
  "theme": {
    "images": {
      "theme_frame": "FD_Persona_Firefox2_header.jpg"
    },
    "colors": {
      "frame": "#a3c3db",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Joomla CMS Blue",
  "manifest_version": 2,
  "description": "Another homage to my favorite CMS. Best used on high resolution monitors at 1920x1080."
}