],
      "transparent": true,
      "type": "text"
    },
    {
      "datasource": {
        "type": "prometheus",
        "uid": "${datasource}"
      },
      "fieldConfig": {
        "defaults": {
          "color": {
            "fixedColor": "rgb(31, 120, 193)",
            "mode": "fixed"
          },
          "mappings": [
            {
              "options": {
                "match": "null",