Examine source code of MILAN theme for firefox

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#ff0000"
    }
  },
  "version": "2.0",
  "name": "MILAN theme for firefox",
  "manifest_version": 2,
  "description": "This theme has the AC MILANS legend and worlds greatest defender of all time Paulo Maldini as footer and ac milans logo as header.. For AC MILAN fans ... hope u liked it :)\n\nforza milan"
}