Examine source code of Iona 360

{
  "theme": {
    "images": {
      "theme_frame": "Iona.jpg"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#fcf800"
    }
  },
  "version": "2.0",
  "name": "Iona 360",
  "manifest_version": 2,
  "description": "360 degree view from Dun I, Iona"
}