Here’s a warm autumn-themed color palette suitable for spreadsheets like Excel:

json
{
  "palette_name": "Autumn Harvest",
  "colors": [
    {
      "name": "Pumpkin Orange",
      "hex_code": "
          
          #FF7F30
       "
    },
    {
      "name": "Golden Yellow",
      "hex_code": "
          
          #FFC300
       "
    },
    {
      "name": "Cranberry Red",
      "hex_code": "
          
          #A50034
       "
    },
    {
      "name": "Maple Leaf Brown",
      "hex_code": "
          
          #8B4513
       "
    },
    {
      "name": "Forest Green",
      "hex_code": "
          
          #228B22
       "
    }
  ]
}

This palette embodies the warm and vibrant colors of autumn, perfect for creating a cozy and inviting spreadsheet. Would you like to know more about how to implement this palette in Excel or have any other specific requests?