Examine source code of worms head

{
  "theme": {
    "images": {
      "theme_frame": "Persona_Header_wormshead.jpg"
    },
    "colors": {
      "frame": "#e3e320",
      "tab_background_text": "#b0d9d5"
    }
  },
  "version": "2.0",
  "name": "worms head",
  "manifest_version": 2,
  "description": "Almost sunset at Worm's Head on the Gower peninsula, South Wales, UK"
}