Examine source code of Ultima RSPS

{
  "theme": {
    "images": {
      "theme_frame": "newpersona.jpg"
    },
    "colors": {
      "frame": "#ffb700",
      "tab_background_text": "#ffd000"
    }
  },
  "version": "2.0",
  "name": "Ultima RSPS",
  "manifest_version": 2,
  "description": "Persona for Ultima RSPS - Ransom"
}