Here’s the updated color palette with the 9th color changed to a dark brown suitable for text and dark backgrounds, and the last color adjusted to a very light shade:

json
{
  "palette_name": "Beautiful Brown Variations with Dark and Light Shades",
  "colors": [
    {
      "name": "Light Beige",
      "hex_code": "
                            
                            #F5F5DC
                        "
    },
    {
      "name": "Tan",
      "hex_code": "
                            
                            #D2B48C
                        "
    },
    {
      "name": "Wheat Brown",
      "hex_code": "
                            
                            #D8B74A
                        "
    },
    {
      "name": "Chestnut Brown",
      "hex_code": "
                            
                            #7B4B3A
                        "
    },
    {
      "name": "Saddle Brown",
      "hex_code": "
                            
                            #8B4513
                        "
    },
    {
      "name": "Rosy Brown",
      "hex_code": "
                            
                            #BC8F8F
                        "
    },
    {
      "name": "Chocolate Brown",
      "hex_code": "
                            
                            #7B3F00
                        "
    },
    {
      "name": "Dark Goldenrod",
      "hex_code": "
                            
                            #B8860B
                        "
    },
    {
      "name": "Rich Dark Brown",
      "hex_code": "
                            
                            #3B2A1A
                        "
    },
    {
      "name": "Very Light Tan",
      "hex_code": "
                            
                            #FAEBD7
                        "
    }
  ]
}

Color Names and Codes:

• Light Beige: #F5F5DC
• Tan: #D2B48C
• Wheat Brown: #D8B74A
• Chestnut Brown: #7B4B3A
• Saddle Brown: #8B4513
• Rosy Brown: #BC8F8F
• Chocolate Brown: #7B3F00
• Dark Goldenrod: #B8860B
• Rich Dark Brown: #3B2A1A
• Very Light Tan: #FAEBD7

This palette now features a rich dark brown for text and backgrounds, as well as a very light tan color for lighter backgrounds or accents.

Would you like any further changes or assistance?