Examine source code of Brasil simple

{
  "theme": {
    "images": {
      "theme_frame": "FireFox_Wearit.PNG"
    },
    "colors": {
      "frame": "#c7c7c7",
      "tab_background_text": "#0d0d0d"
    }
  },
  "version": "2.0",
  "name": "Brasil simple",
  "manifest_version": 2
}