I have added the sliding panel back on my bookshelves and covered them in Omexco's Haiku Paperweave Stitch Straw wallpaper. What a lovely paper that changes with the light. I think the panels are too pretty to hang artwork on them like the Bernoudy's did when they owned the house….though again, they had over $50 million dollars of artwork in the house to hang. The panels are removable, so I can have some variation if I want the entire bookshelves exposed. (Thank you to my designer- David Deatherage of Centrury Design for finding the paper.)
Here is what the panels looked like when the Bernoudy's lived in the house. They had everything painted a buttery yellow.