Here is the updated color palette incorporating your specified colors:

json
{
  "palette_name": "Revised Presentation Palette",
  "colors": [
    {
      "name": "White",
      "hex_code": "
                            
                            #FFFFFF
                        "
    },
    {
      "name": "Dark Blue",
      "hex_code": "
                            
                            #1E2D7D
                        "
    },
    {
      "name": "Copper Red",
      "hex_code": "
                            
                            #CC5500
                        "
    },
    {
      "name": "Coral",
      "hex_code": "
                            
                            #FF7F50
                        "
    },
    {
      "name": "Mint Green",
      "hex_code": "
                            
                            #50C878
                        "
    },
    {
      "name": "Dark Lavender",
      "hex_code": "
                            
                            #714D8B
                        "
    },
    {
      "name": "Gold",
      "hex_code": "
                            
                            #FFD700
                        "
    },
    {
      "name": "Bright Yellow",
      "hex_code": "
                            
                            #BFFF00
                        "
    },
    {
      "name": "Golden Yellow",
      "hex_code": "
                            
                            #FFCC00
                        "
    },
    {
      "name": "Dark Gray",
      "hex_code": "
                            
                            #A9A9A9
                        "
    }
  ]
}

Palette Description:

This revised presentation palette features a balanced mix of colors that can enhance any professional setting. The inclusion of White provides a clean backdrop, while Dark Blue adds depth. The warm tones of Copper Red and Coral bring energy, complemented by the fresh Mint Green. Dark Lavender introduces sophistication, while Gold, Bright Yellow, and Golden Yellow add vibrancy. Dark Gray serves as a neutral anchor, making this palette versatile and appealing.

Is there anything else you would like to modify or any additional assistance you need?