Examine source code of Skeleton Chopper Bike

{
  "theme": {
    "images": {
      "theme_frame": "SkullBikehead.jpg"
    },
    "colors": {
      "frame": "#b0aaaa",
      "tab_background_text": "#b3adad"
    }
  },
  "version": "2.0",
  "name": "Skeleton Chopper Bike",
  "manifest_version": 2,
  "description": "Skeleton Chopper on Black/smokey backdrop with silver/grey text.\nAll the best.\nDay."
}