Recently did an interesting project decorated metal sheets under rust. The texture is plastered under the stone, after painted in several layers. To protect the covered with matte varnish. Suitable for wall decoration in the apartment in loft style. Rust color can vary from light grey with a light red, to dark red violet tones. It all depends on your wishes.
Also, you can decorate under the rust tables, chairs, chests of drawers, cabinets, shelves, kitchen facades or do in this style such as kitchen apron.
The photo does not convey the texture and color in full.