Examine source code of Balls - Bolas

{
  "theme": {
    "images": {
      "theme_frame": "1topo.jpg"
    },
    "colors": {
      "frame": "#ff0000",
      "tab_background_text": "#ffc800"
    }
  },
  "version": "2.0",
  "name": "Balls - Bolas",
  "manifest_version": 2,
  "description": "Funny and beautiful, your firefox dressed like what you want!\nDivertido e lindo, seu firefox vestido como voce quer!"
}