Idealism is more Rational than Materialism

[Alex K]

we only perceive physical substances as mental constructs as shown by their presence of color, smell, taste, etc. if these things are just perceptual states, then perceptual states are all we can affirm to be real. some material behind our perceptual states is wholly unnecessary to postulate.

Again, no. The evidence of shared experience says you are almost certainly wrong.

I think now that OP is promoting solipsism, after all, it is, by the same faulty reasoning, wholly unnecessary to postulate the existence of other people.