The OEM '02+ NSX-T red leather is gorgeous in-person (reminds me of crimson). So much so, that a major car magazine was enthralled w/ the appeal of the '02+ models' interior color-spec's offered by Acura (namely Honda), at the time.
If I was in the marketplace for an '02+ NSX-T w/ the factory red interior, especially if it was New Formula Red exterior, I would get the MOV'IT NSX-R black carpet/trim kit, and go w/ MOV'IT NSX-R black floor-mats or OEM black floor-mats ('02+ black or Zanardi).
And at-most (not sure, need to ponder further), I'd may be get OEM black rear-cowl/firewall panels from another NSX. Or go w/ some black/anthracite/dark-graphite perforated Alcantara / Ultra-Suede & cover up those panels, and match the door-panel inserts w/ that as well. Heck even consider the A/B interior pillars & other related roof-liner trim (dunno what all T-top interiors have that could be covered in terms of above-the-head areas...).
There are numerous high-quality trim overlay offerings from 3M/DuPont/etc which can also add texture/color to other trim that you wish to change (door-cowl trim, door-panel lower trim, etc). I don't just mean pseudo-CF, but other unique desired trim-finishes ala' Mercedes Benz AMG-Designo, Aston Martin, etc.
Lastly, all of the changes above are relatively inexpensive & reversible cosmetic alterations, thus keeping the original panels/trim for posterity's sake & return-to-stock-appearance if so compelled, someday. . .