I would like to suggest zombies of second kind. This is a person with inverted spectrum. It even could be my copy, which speaks all the same philosophical nonsense as me, but any time I see green, he sees red, but names it green. Is he possible? I could imagine such atom-exact copy of me, but with inverted spectrum.

I can't.

As a reductionist and materialist, it doesn't make sense - the feeling of "red" and "green" is a consequence of the way your brain is wired and structured, an atom-exact copy would have the same feelings.

But letting aside the reductionist/materialist view (which after all is part of the debate), it still wouldn't make sense. The special quality that "red" has in my consciousness, the emotions it call upon, the analogies it triggers, has consequences on how I would invoke the "red" color in poetry, or use the "red" color in a drawing. And on how I would feel about a poetry or drawing using "red".

If seeing #ff0000 triggers exactly all the same emotions, feelings, analogies in the consciousness of your clone, then he's getting the same experience than you do, and he's seeing "red", not "green".