Beauvais

{
  "field": {
    "tincture": {
      "name": "gueules",
      "category": "colour"
    }
  },
  "charges": [
    {
      "name": "pal",
      "count": 1,
      "category": "ordinary",
      "tincture": {
        "name": "argent",
        "category": "metal"
      }
    }
  ]
}