Sure! Below is a color palette for wall colors, including Stone, Purple, and Wooden walls. Each category consists of a darker hue shift, a base color, and a lighter hue shift, sorted accordingly.

json
{
  "palette_name": "Wall Color Palette",
  "colors": [
    {
      "name": "Dark Stone",
      "hex_code": "
          
          #4B4B4B
       "
    },
    {
      "name": "Stone",
      "hex_code": "
          
          #A9A9A9
       "
    },
    {
      "name": "Light Stone",
      "hex_code": "
          
          #D3D3D3
       "
    },
    {
      "name": "Dark Purple Wall",
      "hex_code": "
          
          #5C3F8B
       "
    },
    {
      "name": "Purple Wall",
      "hex_code": "
          
          #800080
       "
    },
    {
      "name": "Light Purple Wall",
      "hex_code": "
          
          #DDA0DD
       "
    },
    {
      "name": "Dark Wooden Wall",
      "hex_code": "
          
          #8B4513
       "
    },
    {
      "name": "Wooden Wall",
      "hex_code": "
          
          #D2B48C
       "
    },
    {
      "name": "Light Wooden Wall",
      "hex_code": "
          
          #E6CBA8
       "
    },
    {
      "name": "Dark Brick Wall",
      "hex_code": "
          
          #7E3B3B
       "
    },
    {
      "name": "Brick Wall",
      "hex_code": "
          
          #C74B4B
       "
    },
    {
      "name": "Light Brick Wall",
      "hex_code": "
          
          #E5B9B9
       "
    },
    {
      "name": "Dark Beige Wall",
      "hex_code": "
          
          #C19A6B
       "
    },
    {
      "name": "Beige Wall",
      "hex_code": "
          
          #F5F5DC
       "
    },
    {
      "name": "Light Beige Wall",
      "hex_code": "
          
          #FAEBD7
       "
    },
    {
      "name": "Dark Slate Wall",
      "hex_code": "
          
          #2F4F4F
       "
    },
    {
      "name": "Slate Wall",
      "hex_code": "
          
          #708090
       "
    },
    {
      "name": "Light Slate Wall",
      "hex_code": "
          
          #B0C4DE
       "
    }
  ]
}

This palette includes various wall colors with hue shifts for different materials and styles, providing a good range for your design needs. If you need any further adjustments or additional colors, please let me know!