Examine source code of Translucent Wings

{
  "theme": {
    "images": {
      "theme_frame": "butterflyheader.jpg"
    },
    "colors": {
      "frame": "#134517",
      "tab_background_text": "#e7fa6c"
    }
  },
  "version": "2.0",
  "name": "Translucent Wings",
  "manifest_version": 2,
  "description": "One of the butterflies I photographed in the Butchart butterfly gardens in Victoria, Canada.  This one posed nicely. :)"
}