The MaterialOverride property of the ModelRenderer class allows you to specify a custom material to be used for rendering the model. This property can be used to change the appearance of the model by applying a different material than the one originally assigned to it.
To use the MaterialOverride property, assign a Material object to it. This will override the default material of the model with the specified material. If you want to revert to the original material, set this property to null.
// Create a new ModelRenderer instance
ModelRenderer modelRenderer = new ModelRenderer();
// Load a custom material
Material customMaterial = Material.Load("path/to/custom/material");
// Apply the custom material to the model
modelRenderer.MaterialOverride = customMaterial;
// To remove the override and use the original material
modelRenderer.MaterialOverride = null;