Examine source code of Blue Mini

{
  "theme": {
    "images": {
      "theme_frame": "Persona-Mini.png"
    },
    "colors": {
      "frame": "#cf7f7f",
      "tab_background_text": "#0a0808"
    }
  },
  "version": "2.0",
  "name": "Blue Mini",
  "manifest_version": 2,
  "description": "Blue Austin Mini"
}