The lighting's terrible in these shots (the black background really absorbs light -- must go back to my shiny wood floor), but it's a slightly textured silver metallic paper on the left, and a smooth and very shiny gold paper on the right.
The insides were fun to choose (I love matching things, especially since it often entails seeing which of my small pieces of scrap will fit!)...
The silver book has a lovely swirly-textured ever-so-slightly-lilac silver feathery-looking paper, and the gold book has a faux-leather black cardstock that just seemed to suit it.
I'll be at the Book Fair at the Museum of Printing History on November 8, and both of these should be available then.