Examine source code of Pottery workshop

{
  "theme": {
    "images": {
      "theme_frame": "mouldsheadersoft.jpg"
    },
    "colors": {
      "frame": "#e3e1e4",
      "tab_background_text": "#ccffff"
    }
  },
  "version": "2.0",
  "name": "Pottery workshop",
  "manifest_version": 2,
  "description": "Mould makers' workshop shelves, Gladstone Pottery Museum, Longton (not London), preserved as the last complete Victorian pottery factory in the UK"
}