Examine source code of Iona by nature

{
  "theme": {
    "images": {
      "theme_frame": "aiwnastrip.JPG"
    },
    "colors": {
      "frame": "#8bbff7",
      "tab_background_text": "#0e3770"
    }
  },
  "version": "2.0",
  "name": "Iona by nature",
  "manifest_version": 2,
  "description": "Iona, natural materials, sand"
}