Paletted Permutations of Equipment Textures

Is there a reason this won't work? If so how could I fix it/what could I do?
  "sources": [
    {
      "type": "paletted_permutations",
      "textures": [
        "minecraft:entity/equipment/llama_body/striped_carpet"
      ],
      "palette_key": "minecraft:entity/equipment/llama_body/color/palette",
      "permutations": {
        "blue": "minecraft:entity/equipment/llama_body/color/blue",
        "green": "minecraft:entity/equipment/llama_body/color/green"
      }
    }
  ]
}```