I guess I should mention that I did a run of Perique this past winter, using Chillard's White Angel Leaf. (Thanks, Will.) Going in, the leaf was a golden claro. I ran it for 3 months, resting on the floor of my enclosed back porch--average temp ~55-60 degrees F. The leaf was removed, aired and repacked into the press at 3 weeks, and again at 2 months. When it was finished, the color was a rich colorado, with a pungent, fruity aroma. It's not as intense as SJP Perique, but the pH seems about the same.
My impression is that if I use a light-colored leaf, I get a lighter color Perique. A variety that would kiln to a deep brown gives me a deeper colored Perique. The nicotine strength of the tobacco going in determines the nicotine strength of the final Perique.
Regardless, the resulting Perique has always been excellent for pipe blending with flue-cured Virginia. As with all blending (pipe or cigar) using home-grown leaf, the blending recipes are just a starting point, and have to be adjusted for the batches of leaf on hand.
Bob