As stated in X5, the Black Armor was more of an enhancement, not an actual armor.

As stated in X5, the Black Armor was more of an enhancement, not an actual armor.
Well if it IS correct(I'm not saying it is), then it wouldn't be because X has armors. It'd be because Phantom and the like were clones of X.(This contributes to both theorys now that I think about it)
Wouldn't be surprised if X used his own DNA to create Zero's copy body.
If Omega used Zero's original body, thus having Zero's DNA in the Model O Biometal, and combined with Model X, and causing it to look like Zero from the Zero series with a darker red armor... well, it'd explain much, wouldn't it?