Materialism can't be refuted

Philosophers sometimes get paid a lot to arrogantly machine gun arguments to argue that materialism is somehow wrong. They cannot escape the fact that everything we know and a good deal we don't know is material.

Certainly, our senses contruct a model of the world. We see things such as the color blue. My conception of the color blue is physical because my brain and senses constructed it. Is it the same as yours? Unsure. Guessing similar with differences. A shrimp has more receptors in a very different brain and likely perceives it differently.