Here’s a color palette inspired by the colors you’ve mentioned, with light tones that complement them:

json
{
  "palette_name": "Warm Earthy Tones",
  "colors": [
    {
      "name": "Light Cream",
      "hex_code": "
                            
                            #F7F1E3
                        "
    },
    {
      "name": "Soft Coral",
      "hex_code": "
                            
                            #F8D3D0
                        "
    },
    {
      "name": "Pale Petrol",
      "hex_code": "
                            
                            #A8D3D5
                        "
    },
    {
      "name": "Light Acacia",
      "hex_code": "
                            
                            #D1E1D1
                        "
    },
    {
      "name": "Muted Pine",
      "hex_code": "
                            
                            #B7D6C1
                        "
    }
  ]
}

This palette features light, muted tones that harmonize with your existing colors of white, roasty red, petrol, acacia, and pine. Would you like suggestions for specific wall finishes or accents using these colors?