Examine source code of Betamotor

{
  "theme": {
    "images": {
      "theme_frame": "betamotor_h.png"
    },
    "colors": {
      "frame": "#d9cece",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Betamotor",
  "manifest_version": 2,
  "description": "Graphics from <a href=\"https://outgoing.prod.mozaws.net/v1/c5457e186e906d4dd49808ac48d3749d4eae60cd38a64fcab53e2b5a95dbc595/http%3A//www.betamotor.it\" rel=\"nofollow\">www.betamotor.it</a>"
}