Examine source code of Cubico

{
  "theme": {
    "images": {
      "theme_frame": "Persona.jpg"
    },
    "colors": {
      "frame": "#e3e3e3",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Cubico",
  "manifest_version": 2,
  "description": "Three-dimensional solid objects bounded by square faces, facets or sides, with three meeting at each vertex"
}