Do they exist?? Or only weapons.
No. Only weapons are Orange. But there are pearlescent shields, iirc.
Yeah, Knoxx’s has 3 pearlescent shields. Ironclad, Rose, and Omega.
As far as coms go the Knoxx dlc has a few unique loyalty ones for certain manufacturers for the characters as well as a few other uniques and that are pretty cool but not legendary.