Examine source code of giants causeway

{
  "theme": {
    "images": {
      "theme_frame": "causewayheader.jpg"
    },
    "colors": {
      "frame": "#bdbdbd",
      "tab_background_text": "#d4f2cb"
    }
  },
  "version": "2.0",
  "name": "giants causeway",
  "manifest_version": 2,
  "description": "Giant's Causeway in Ireland"
}