Examine source code of fire bird

{
  "theme": {
    "images": {
      "theme_frame": "firebird.jpg"
    },
    "colors": {
      "frame": "#7a7474",
      "tab_background_text": "#f2efef"
    }
  },
  "version": "2.0",
  "name": "fire bird",
  "manifest_version": 2,
  "description": "made using xnhan00's wallpaper Birds of fire"
}