Color change is wrong

I want change my custom 3d model’s color to red. (“fbx model”)
but, it always changed black.
and I don’t know why it keeps changing black color.

this is my 3d model’s texture

and this is my color change code.
thank you.

onClick Function(){
let _object = intersects[0].object;
let cloned = _object.material.clone();
_object.material = cloned;

Can you please share your code as a live example? Right now, you have shared not enough information to properly investigate the issue.