bedrock-samples/resource_pack/render_controllers/fireball.render_controllers.json

{
  "format_version": "1.10.0",
  "render_controllers": {
    "controller.render.fireball": {
      "geometry": "Geometry.default",
      "materials": [ { "*": "Material.default" } ],
      "textures": [ "Texture.default" ],
      "on_fire_color": {
        "r": 0.0,
        "g": 0.0,
        "b": 0.0,
        "a": 0.0
      },
      "filter_lighting": true
    }
  }
}