Blank Painting is a decorative furniture item that can display the colors or patterns of wall Paintbrushes.
Furniture Brushes do not work on Blank Paintings.
The "Carpets and Paintings" blueprint set must be purchased from Roman before the Blank Painting can be crafted at a Paint Station.
To customize a Blank Painting, walk up to it with a wall paintbrush, and press E when the tether 'connects' to the item. To change the design, just paint over the existing one.
Picking up a customized Blank Painting with a Hammer returns the item to its blank state.