Last I heard Vette Essentials didn't do C4 interiors, if they don't, I would just shop around at interior shops in your area. I just had some C4 seats recovered a few months ago and a local upholstery shop did a great job, I'm sure there's plenty of interior shops in your area.
I don't recommend that at all.
I used to have all red interior and I bought red C4 seats and I got a little over spray from the red dye on the seats. I tried everything and I couldn't get the dye out. I used seat cover until the dye finally faded out. But i kept getting a red ass.