Those are offered with certain special projects & limited editions. I don't think they are offered separately. I have several and alternate between a brown one and a black non-distressed leather sheath for EDC. The distressed is softer, conforming to the shape of the knife more while the non distressed one holds its form better. I have both black and brown in distressed, they may have other shades or colors but I haven't seen 'em.
BTW the "distressed leather" is really a leather split with a nap, the regular ones have a polished surface that is either the dermal layer (the surface) or an "assisted grain" split. (Although it looks like some of the more recent sheaths made in Mexico may use a reconstituted leather that is surface textured.)