Here is a revised color palette that incorporates maroon along with variations of red, while maintaining the original colors you liked:

json
{
  "palette_name": "Crimson Forest",
  "colors": [
    {
      "name": "Forest Green",
      "hex_code": "
          
          #228B22
       "
    },
    {
      "name": "Cream",
      "hex_code": "
          
          #FFFDD0
       "
    },
    {
      "name": "Metallic Gold",
      "hex_code": "
          
          #D4AF37
       "
    },
    {
      "name": "Deep Black",
      "hex_code": "
          
          #000000
       "
    },
    {
      "name": "Maroon",
      "hex_code": "
          
          #800000
       "
    },
    {
      "name": "Cherry Red",
      "hex_code": "
          
          #FF3D3D
       "
    }
  ]
}

This palette, “Crimson Forest,” features the luxurious combination of forest green, cream, and gold, enhanced by the depth of deep black and the richness of maroon, alongside a vibrant cherry red for a striking contrast.

Would you like to see any more variations or specific combinations?