RJF, I'll snap a few pics of my interior tonight so you can see what I did. Stock Silverado.
I have the factory slate grey, but like I said before, I decided to go with a few black accents since LMC makes you paint to match, which I wasn't gonna do.
The rear side panels are tough to find, and pricey like factory dash's in good shape. It may almost be more feasible to make a pair, or have an upholstery shop do it.
I had to have my rear side panels made. I cut the board and had my interior guy sew them up and cover them.

