curtains Marika Meyer at the DC Design House 2012 - The Painted Room Color Consulting. Have been recommending wallpaper or fabric on the inside back of bookcases for years! Textured wall covering works well too.
I like the gray wall color - "I emailed Jaime, the designer, who shared the paint colors in this room. The wall color is Benjamin Moore Coastal Fog, ceiling color is Benjamin Moore Puritan Gray and the trim color is Benjamin Moore Monterey White"💕