Stand Oil. Specially modified oil medium has been developed to work seamlessly with LUKAS Berlin Water‑Mixable Oil Colours, providing the benefits of classic oil mediums without compromising their water‑miscibility. LUKAS Berlin Stand Oil Modified acts as a drying retarder for LUKAS Berlin Water-Mixable Oil colours, drying more slowly than linseed oil to form an elastic, non-yellowing film. It is particularly suitable for creating your own water-mixable oil colours, especially pale shades. For best results, use this medium only in upper painting layers.