Examine source code of Heronmaiden

{
  "theme": {
    "images": {
      "theme_frame": "head3.jpg"
    },
    "colors": {
      "frame": "#999999",
      "tab_background_text": "#908bd9"
    }
  },
  "version": "2.0",
  "name": "Heronmaiden",
  "manifest_version": 2,
  "description": "Heronmaiden's personas… create by me, inspired by me… If you want the version without my name, you can have it on the personas \"Dark heron\", category Nature."
}