@minecraft/creator-tools/data/forms/client_biome/minecraft_grass_appearance.form.json

Minecraft Creator Tools command line and libraries.

{
  "fields": [
    {
      "id": "color",
      "title": "color",
      "description": "RGB color of grass.",
      "dataType": 16
    }
  ],
  "description": "Set the grass color or color map used during rendering. Biomes without this component will have default grass appearance.",
  "title": "Grass Appearance",
  "id": "minecraft:grass_appearance"
}