Black Oxide: Warm Blacks: Black Oxide tends to have warmer undertones. Use it for warm black tones in your paintings, especially when you want to avoid a cool, stark appearance. Mixing with Reds: Experiment with mixing Black Oxide with reds to create deep, warm purples suitable for shadows and darker areas in your compositions. Underpainting: Use Black Oxide as an underpainting color for warm-toned subjects. It provides a solid foundation for building up other colours. Layering Techniques: Due to its semi-transparency, Black Oxide is suitable for layering. Build up layers to create subtle transitions and add complexity to your shadows. Textured Surfaces: Apply Black Oxide with textured brushes or palette knives to create interesting and textured surfaces, such as aged wood or stone.