Examine source code of HalaMadrid

{
  "theme": {
    "images": {
      "theme_frame": "m1.png"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "HalaMadrid",
  "manifest_version": 2,
  "description": "Hala Madrid\nReal Madrid\nMarcelo, Angel Di Maria, Karim Benzema, Anthony Reveillere, Jose Mourinho, Cristiano Ronaldo"
}