Kids Room, Bedroom Room Type, Rug Floor, and Pre-Teen Age Jennifer and Mattias Segerholt selected a deeply saturated blue hue color for the playroom wall inside their Portland, Oregon, home. All the interior walls are painted with matched hues from Le Corbusier’s Polychromie Architecturale, a book that the pair pored over for months. Photo by John Clark.  Chalkboard Walls in Kitchens and Kids' Rooms by Jaime Gillin