#backgroundColor

{
  "chartType": "column",
  "backgroundColor": "lightyellow",
  "dataset": [
    { "date": "2019", "profit": 10, "sales": 20 },
    { "date": "2020", "profit": 30, "sales": 60 },
    { "date": "2021", "profit": 30, "sales": 60 },
    { "date": "2022", "profit": 50, "sales": 100 },
    { "date": "2023", "profit": 40, "sales": 80 }
  ],
  "dimensions": [
    {
      "id": "date",
      "alias": "日期"
    }
  ],
  "measures": [
    { "id": "profit", "alias": "利润" },
    { "id": "sales", "alias": "销售额" }
  ]
}