How to change color of entity without change materials?

I use unity 2019.2b with LWRP

In LWRP, change color of gameobject is

Code (CSharp):

1. gameObject.GetComponent<MeshRenderer>().material.SetColor("_BaseColor", color);

after that i convert to entity via GameObjectConversionUtility

Code (CSharp):

1. Entity entity =  GameObjectConversionUtility.ConvertGameObjectHierarchy(instance.gameObject, World.Active);
2. entityManager.SetName(entity, instance.name);
3. Destroy(instance.gameObject);
4. entityList.Add(entity);

Here is my question.

how can change color after converted to entity already.

 

Is rather 1 year old and I am not sure how relevant may be, but here it is